57147415877 has 4 divisors (see below), whose sum is σ = 57168670860. Its totient is φ = 57126160896.

The previous prime is 57147415841. The next prime is 57147415907. The reversal of 57147415877 is 77851474175.

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

It can be written as a sum of positive squares in 2 ways, for example, as 671794561 + 56475621316 = 25919^2 + 237646^2 .

It is a cyclic number.

It is not a de Polignac number, because 57147415877 - 2²⁰ = 57146367301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57147415817) 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, 10623458 + ... + 10628835.

It is an arithmetic number, because the mean of its divisors is an integer number (14292167715).

Almost surely, 2^57147415877 is an apocalyptic number.

It is an amenable number.

57147415877 is a deficient number, since it is larger than the sum of its proper divisors (21254983).

57147415877 is a wasteful number, since it uses less digits than its factorization.

57147415877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21254982.

The product of its digits is 7683200, while the sum is 56.

The spelling of 57147415877 in words is "fifty-seven billion, one hundred forty-seven million, four hundred fifteen thousand, eight hundred seventy-seven".