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87961630125600 = 253352711173110999
BaseRepresentation
bin10100000000000000101001…
…101101111010111000100000
3102112110001100020112211221000
4110000000221231322320200
543012130404303004400
6511025003125032000
724346006123436550
oct2400005155727040
9375401306484830
1087961630125600
1126033355061880
129a47677b55600
133a10991326a8a
1417a151935d160
15a2813d067600
hex500029b7ae20

87961630125600 has 1152 divisors, whose sum is σ = 419958120960000. Its totient is φ = 17202574540800.

The previous prime is 87961630125541. The next prime is 87961630125623. The reversal of 87961630125600 is 652103616978.

87961630125600 is a `hidden beast` number, since 8 + 7 + 9 + 6 + 1 + 6 + 3 + 0 + 1 + 25 + 600 = 666.

It is a super-2 number, since 2×879616301256002 (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 26718901 + ... + 29829899.

It is an arithmetic number, because the mean of its divisors is an integer number (364546980000).

Almost surely, 287961630125600 is an apocalyptic number.

87961630125600 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87961630125600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209979060480000).

87961630125600 is an abundant number, since it is smaller than the sum of its proper divisors (331996490834400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87961630125600 is a wasteful number, since it uses less digits than its factorization.

87961630125600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111063 (or 3111044 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 87961630125600 in words is "eighty-seven trillion, nine hundred sixty-one billion, six hundred thirty million, one hundred twenty-five thousand, six hundred".