1251159472536 has 64 divisors (see below), whose sum is σ = 3213266807520. Its totient is φ = 405728378880.

The previous prime is 1251159472487. The next prime is 1251159472573. The reversal of 1251159472536 is 6352749511521.

It is a congruent 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, 1453645 + ... + 2148348.

Almost surely, 2^{1251159472536} is an apocalyptic number.

It is an amenable number.

1251159472536 is an abundant number, since it is smaller than the sum of its proper divisors (1962107334984).

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

1251159472536 is a wasteful number, since it uses less digits than its factorization.

1251159472536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602396 (or 3602392 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 51.

The spelling of 1251159472536 in words is "one trillion, two hundred fifty-one billion, one hundred fifty-nine million, four hundred seventy-two thousand, five hundred thirty-six".