2551256111536 has 40 divisors (see below), whose sum is σ = 5407967957184. Its totient is φ = 1156319876160.

The previous prime is 2551256111507. The next prime is 2551256111557. The reversal of 2551256111536 is 6351116521552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2551256111492 and 2551256111501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20826210 + ... + 20948353.

Almost surely, 2^{2551256111536} is an apocalyptic number.

It is an amenable number.

2551256111536 is an abundant number, since it is smaller than the sum of its proper divisors (2856711845648).

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

2551256111536 is a wasteful number, since it uses less digits than its factorization.

2551256111536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41774929 (or 41774923 counting only the distinct ones).

The product of its digits is 270000, while the sum is 43.

The spelling of 2551256111536 in words is "two trillion, five hundred fifty-one billion, two hundred fifty-six million, one hundred eleven thousand, five hundred thirty-six".