57168878797 has 4 divisors (see below), whose sum is σ = 57381402780. Its totient is φ = 56956354816.

The previous prime is 57168878771. The next prime is 57168878839. The reversal of 57168878797 is 79787886175.

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 15723655236 + 41445223561 = 125394^2 + 203581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57168878797 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 (57168878497) 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, 106261588 + ... + 106262125.

It is an arithmetic number, because the mean of its divisors is an integer number (14345350695).

Almost surely, 2^57168878797 is an apocalyptic number.

It is an amenable number.

57168878797 is a deficient number, since it is larger than the sum of its proper divisors (212523983).

57168878797 is a wasteful number, since it uses less digits than its factorization.

57168878797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212523982.

The product of its digits is 331914240, while the sum is 73.

The spelling of 57168878797 in words is "fifty-seven billion, one hundred sixty-eight million, eight hundred seventy-eight thousand, seven hundred ninety-seven".