2057188567638 has 48 divisors (see below), whose sum is σ = 4477236949584. Its totient is φ = 629651189760.

The previous prime is 2057188567613. The next prime is 2057188567657. The reversal of 2057188567638 is 8367658817502.

It is a super-2 number, since 2×2057188567638² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14396995 + ... + 14539182.

It is an arithmetic number, because the mean of its divisors is an integer number (93275769783).

Almost surely, 2^{2057188567638} is an apocalyptic number.

2057188567638 is an abundant number, since it is smaller than the sum of its proper divisors (2420048381946).

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

2057188567638 is a wasteful number, since it uses less digits than its factorization.

2057188567638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28936257 (or 28936240 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 66.

The spelling of 2057188567638 in words is "two trillion, fifty-seven billion, one hundred eighty-eight million, five hundred sixty-seven thousand, six hundred thirty-eight".