57128617779 has 32 divisors (see below), whose sum is σ = 78184811520. Its totient is φ = 37093056000.

The previous prime is 57128617753. The next prime is 57128617787. The reversal of 57128617779 is 97771682175.

It is not a de Polignac number, because 57128617779 - 2²³ = 57120229171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57128617729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18492667 + ... + 18495755.

It is an arithmetic number, because the mean of its divisors is an integer number (2443275360).

Almost surely, 2^57128617779 is an apocalyptic number.

57128617779 is a deficient number, since it is larger than the sum of its proper divisors (21056193741).

57128617779 is a wasteful number, since it uses less digits than its factorization.

57128617779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its digits is 10372320, while the sum is 60.

The spelling of 57128617779 in words is "fifty-seven billion, one hundred twenty-eight million, six hundred seventeen thousand, seven hundred seventy-nine".