2557259647390 has 32 divisors (see below), whose sum is σ = 5430346758144. Its totient is φ = 848491679520.

The previous prime is 2557259647367. The next prime is 2557259647469. The reversal of 2557259647390 is 937469527552.

It is a happy number.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 589228164 + ... + 589232503.

It is an arithmetic number, because the mean of its divisors is an integer number (169698336192).

Almost surely, 2^{2557259647390} is an apocalyptic number.

2557259647390 is an abundant number, since it is smaller than the sum of its proper divisors (2873087110754).

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

2557259647390 is a wasteful number, since it uses less digits than its factorization.

2557259647390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178460712.

The product of its (nonzero) digits is 142884000, while the sum is 64.

The spelling of 2557259647390 in words is "two trillion, five hundred fifty-seven billion, two hundred fifty-nine million, six hundred forty-seven thousand, three hundred ninety".