56577173465 has 4 divisors (see below), whose sum is σ = 67892608164. Its totient is φ = 45261738768.

The previous prime is 56577173447. The next prime is 56577173473. The reversal of 56577173465 is 56437177565.

It is a happy number.

56577173465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 34914043609 + 21663129856 = 186853^2 + 147184^2 .

It is a cyclic number.

It is not a de Polignac number, because 56577173465 - 2¹⁴ = 56577157081 is a prime.

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 56577173465.

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, 5657717342 + ... + 5657717351.

It is an arithmetic number, because the mean of its divisors is an integer number (16973152041).

Almost surely, 2^56577173465 is an apocalyptic number.

It is an amenable number.

56577173465 is a deficient number, since it is larger than the sum of its proper divisors (11315434699).

56577173465 is a wasteful number, since it uses less digits than its factorization.

56577173465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315434698.

The product of its digits is 18522000, while the sum is 56.

The spelling of 56577173465 in words is "fifty-six billion, five hundred seventy-seven million, one hundred seventy-three thousand, four hundred sixty-five".