1251560612610 has 192 divisors, whose sum is σ = 4270533995520. Its totient is φ = 246376909440.

The previous prime is 1251560612609. The next prime is 1251560612657. The reversal of 1251560612610 is 162160651521.

1251560612610 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 560 + 61 + 26 + 10 = 666.

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, 4620972 + ... + 4884311.

It is an arithmetic number, because the mean of its divisors is an integer number (22242364560).

Almost surely, 2^{1251560612610} is an apocalyptic number.

1251560612610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251560612610 is an abundant number, since it is smaller than the sum of its proper divisors (3018973382910).

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

1251560612610 is a wasteful number, since it uses less digits than its factorization.

1251560612610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505333 (or 9505330 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 1251560612610 in words is "one trillion, two hundred fifty-one billion, five hundred sixty million, six hundred twelve thousand, six hundred ten".