2551021155536 has 80 divisors (see below), whose sum is σ = 6046768934400. Its totient is φ = 1018197765504.

The previous prime is 2551021155521. The next prime is 2551021155559. The reversal of 2551021155536 is 6355511201552.

2551021155536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2551021155493 and 2551021155502.

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, 10033670 + ... + 10284773.

It is an arithmetic number, because the mean of its divisors is an integer number (75584611680).

Almost surely, 2^{2551021155536} is an apocalyptic number.

It is an amenable number.

2551021155536 is an abundant number, since it is smaller than the sum of its proper divisors (3495747778864).

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

2551021155536 is a wasteful number, since it uses less digits than its factorization.

2551021155536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20318536 (or 20318530 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 2551021155536 in words is "two trillion, five hundred fifty-one billion, twenty-one million, one hundred fifty-five thousand, five hundred thirty-six".