57702506138 has 8 divisors (see below), whose sum is σ = 86566045332. Its totient is φ = 28847157696.

The previous prime is 57702506131. The next prime is 57702506149. The reversal of 57702506138 is 83160520775.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44511294529 + 13191211609 = 210977^2 + 114853^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (57702506131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030045 + ... + 2058272.

Almost surely, 2^57702506138 is an apocalyptic number.

57702506138 is a deficient number, since it is larger than the sum of its proper divisors (28863539194).

57702506138 is a wasteful number, since it uses less digits than its factorization.

57702506138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095376.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 57702506138 in words is "fifty-seven billion, seven hundred two million, five hundred six thousand, one hundred thirty-eight".