57777720058 has 4 divisors (see below), whose sum is σ = 86666580090. Its totient is φ = 28888860028.

The previous prime is 57777720053. The next prime is 57777720073. The reversal of 57777720058 is 85002777775.

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., 54327684889 + 3450035169 = 233083^2 + 58737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57777719990 and 57777720008.

It is not an unprimeable number, because it can be changed into a prime (57777720053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444430013 + ... + 14444430016.

Almost surely, 2^57777720058 is an apocalyptic number.

57777720058 is a deficient number, since it is larger than the sum of its proper divisors (28888860032).

57777720058 is a wasteful number, since it uses less digits than its factorization.

57777720058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28888860031.

The product of its (nonzero) digits is 6722800, while the sum is 55.

The spelling of 57777720058 in words is "fifty-seven billion, seven hundred seventy-seven million, seven hundred twenty thousand, fifty-eight".