1251521160954 has 32 divisors (see below), whose sum is σ = 2630475672000. Its totient is φ = 396459245952.

The previous prime is 1251521160913. The next prime is 1251521160979. The reversal of 1251521160954 is 4590611251521.

It is a super-4 number, since 4×1251521160954⁴ (a number of 49 digits) contains 4444 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65542579 + ... + 65561670.

It is an arithmetic number, because the mean of its divisors is an integer number (82202364750).

Almost surely, 2^{1251521160954} is an apocalyptic number.

1251521160954 is an abundant number, since it is smaller than the sum of its proper divisors (1378954511046).

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

1251521160954 is a wasteful number, since it uses less digits than its factorization.

1251521160954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131104334.

The product of its (nonzero) digits is 108000, while the sum is 42.

The spelling of 1251521160954 in words is "one trillion, two hundred fifty-one billion, five hundred twenty-one million, one hundred sixty thousand, nine hundred fifty-four".