57405508865 has 4 divisors (see below), whose sum is σ = 68886610644. Its totient is φ = 45924407088.

The previous prime is 57405508859. The next prime is 57405508873. The reversal of 57405508865 is 56880550475.

It is a happy number.

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 33019250944 + 24386257921 = 181712^2 + 156161^2 .

It is a cyclic number.

It is not a de Polignac number, because 57405508865 - 2¹⁴ = 57405492481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5740550882 + ... + 5740550891.

It is an arithmetic number, because the mean of its divisors is an integer number (17221652661).

Almost surely, 2^57405508865 is an apocalyptic number.

It is an amenable number.

57405508865 is a deficient number, since it is larger than the sum of its proper divisors (11481101779).

57405508865 is a wasteful number, since it uses less digits than its factorization.

57405508865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11481101778.

The product of its (nonzero) digits is 6720000, while the sum is 53.

The spelling of 57405508865 in words is "fifty-seven billion, four hundred five million, five hundred eight thousand, eight hundred sixty-five".