57897446777 has 4 divisors (see below), whose sum is σ = 58008574836. Its totient is φ = 57786318720.

The previous prime is 57897446773. The next prime is 57897446791. The reversal of 57897446777 is 77764479875.

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 40552293376 + 17345153401 = 201376^2 + 131701^2 .

It is a cyclic number.

It is not a de Polignac number, because 57897446777 - 2² = 57897446773 is a prime.

It is a super-2 number, since 2×57897446777² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57897446777.

It is not an unprimeable number, because it can be changed into a prime (57897446773) 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, 55563248 + ... + 55564289.

It is an arithmetic number, because the mean of its divisors is an integer number (14502143709).

Almost surely, 2^57897446777 is an apocalyptic number.

It is an amenable number.

57897446777 is a deficient number, since it is larger than the sum of its proper divisors (111128059).

57897446777 is a wasteful number, since it uses less digits than its factorization.

57897446777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111128058.

The product of its digits is 580849920, while the sum is 71.

The spelling of 57897446777 in words is "fifty-seven billion, eight hundred ninety-seven million, four hundred forty-six thousand, seven hundred seventy-seven".