15851525720130 has 64 divisors (see below), whose sum is σ = 42362429155200. Its totient is φ = 4217904135360.

The previous prime is 15851525720117. The next prime is 15851525720141. The reversal of 15851525720130 is 3102752515851.

15851525720130 is a `hidden beast` number, since 1 + 5 + 8 + 51 + 525 + 72 + 0 + 1 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63551620 + ... + 63800559.

It is an arithmetic number, because the mean of its divisors is an integer number (661912955550).

Almost surely, 2^{15851525720130} is an apocalyptic number.

15851525720130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15851525720130 is an abundant number, since it is smaller than the sum of its proper divisors (26510903435070).

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

15851525720130 is a wasteful number, since it uses less digits than its factorization.

15851525720130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127352656 (or 127352650 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 45.

The spelling of 15851525720130 in words is "fifteen trillion, eight hundred fifty-one billion, five hundred twenty-five million, seven hundred twenty thousand, one hundred thirty".