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13125662880 = 2535113180191
BaseRepresentation
bin11000011100101100…
…11011100010100000
31020212202020202112020
430032112123202200
5203340132203010
610010240301440
7643160202501
oct141626334240
936782222466
1013125662880
115626104880
122663911880
13131242c335
148c731aba8
1551c4c5470
hex30e59b8a0

13125662880 has 192 divisors, whose sum is σ = 46560116736. Its totient is φ = 3079296000.

The previous prime is 13125662867. The next prime is 13125662887. The reversal of 13125662880 is 8826652131.

It is not an unprimeable number, because it can be changed into a prime (13125662887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123585 + ... + 203775.

It is an arithmetic number, because the mean of its divisors is an integer number (242500608).

Almost surely, 213125662880 is an apocalyptic number.

13125662880 is a gapful number since it is divisible by the number (10) 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 13125662880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23280058368).

13125662880 is an abundant number, since it is smaller than the sum of its proper divisors (33434453856).

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

13125662880 is a wasteful number, since it uses less digits than its factorization.

13125662880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80251 (or 80243 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 13125662880 in words is "thirteen billion, one hundred twenty-five million, six hundred sixty-two thousand, eight hundred eighty".