57872044138 has 4 divisors (see below), whose sum is σ = 86808066210. Its totient is φ = 28936022068.

The previous prime is 57872044057. The next prime is 57872044177. The reversal of 57872044138 is 83144027875.

57872044138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30250601329 + 27621442809 = 173927^2 + 166197^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 57872044091 and 57872044100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14468011033 + ... + 14468011036.

Almost surely, 2^57872044138 is an apocalyptic number.

57872044138 is a deficient number, since it is larger than the sum of its proper divisors (28936022072).

57872044138 is a wasteful number, since it uses less digits than its factorization.

57872044138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28936022071.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 57872044138 in words is "fifty-seven billion, eight hundred seventy-two million, forty-four thousand, one hundred thirty-eight".