56665151005 has 4 divisors (see below), whose sum is σ = 67998181212. Its totient is φ = 45332120800.

The previous prime is 56665150943. The next prime is 56665151027. The reversal of 56665151005 is 50015156665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50015156665 = 5 ⋅10003031333.

It can be written as a sum of positive squares in 2 ways, for example, as 23877357529 + 32787793476 = 154523^2 + 181074^2 .

It is not a de Polignac number, because 56665151005 - 2²⁹ = 56128280093 is a prime.

It is a Duffinian number.

It is a congruent 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, 5666515096 + ... + 5666515105.

It is an arithmetic number, because the mean of its divisors is an integer number (16999545303).

Almost surely, 2^56665151005 is an apocalyptic number.

It is an amenable number.

56665151005 is a deficient number, since it is larger than the sum of its proper divisors (11333030207).

56665151005 is a wasteful number, since it uses less digits than its factorization.

56665151005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11333030206.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 56665151005 in words is "fifty-six billion, six hundred sixty-five million, one hundred fifty-one thousand, five".