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68836884480 = 21535571319
BaseRepresentation
bin100000000011011111…
…1111000000000000000
320120200100202001100000
41000012333320000000
52111434220300410
651342341200000
74654561602210
oct1000677700000
9216610661300
1068836884480
1127214699181
1211411400000
136650498910
143490368240
151bcd45ddc0
hex1006ff8000

68836884480 has 1536 divisors, whose sum is σ = 320607705600. Its totient is φ = 13759414272.

The previous prime is 68836884463. The next prime is 68836884503. The reversal of 68836884480 is 8448863886.

68836884480 is a `hidden beast` number, since 6 + 88 + 36 + 88 + 448 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1536).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3622993911 + ... + 3622993929.

It is an arithmetic number, because the mean of its divisors is an integer number (208728975).

Almost surely, 268836884480 is an apocalyptic number.

68836884480 is a gapful number since it is divisible by the number (60) 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 68836884480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160303852800).

68836884480 is an abundant number, since it is smaller than the sum of its proper divisors (251770821120).

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

68836884480 is an equidigital number, since it uses as much as digits as its factorization.

68836884480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 56623104, while the sum is 63.

The spelling of 68836884480 in words is "sixty-eight billion, eight hundred thirty-six million, eight hundred eighty-four thousand, four hundred eighty".