2551597813684 has 24 divisors (see below), whose sum is σ = 4577323814280. Its totient is φ = 1244183745024.

The previous prime is 2551597813543. The next prime is 2551597813711. The reversal of 2551597813684 is 4863187951552.

It can be written as a sum of positive squares in 4 ways, for example, as 997170084 + 2550600643600 = 31578^2 + 1597060^2 .

It is a congruent number.

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, 49065859 + ... + 49117834.

It is an arithmetic number, because the mean of its divisors is an integer number (190721825595).

Almost surely, 2^{2551597813684} is an apocalyptic number.

It is an amenable number.

2551597813684 is a deficient number, since it is larger than the sum of its proper divisors (2025726000596).

2551597813684 is a wasteful number, since it uses less digits than its factorization.

2551597813684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98183859 (or 98183857 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 64.

The spelling of 2551597813684 in words is "two trillion, five hundred fifty-one billion, five hundred ninety-seven million, eight hundred thirteen thousand, six hundred eighty-four".