56745454765 has 4 divisors (see below), whose sum is σ = 68094545724. Its totient is φ = 45396363808.

The previous prime is 56745454723. The next prime is 56745454769.

56745454765 is nontrivially palindromic in base 10.

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 32370126889 + 24375327876 = 179917^2 + 156126^2 .

It is a cyclic number.

It is not a de Polignac number, because 56745454765 - 2⁷ = 56745454637 is a prime.

It is a super-2 number, since 2×56745454765² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56745454769) 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, 5674545472 + ... + 5674545481.

It is an arithmetic number, because the mean of its divisors is an integer number (17023636431).

Almost surely, 2^56745454765 is an apocalyptic number.

It is an amenable number.

56745454765 is a deficient number, since it is larger than the sum of its proper divisors (11349090959).

56745454765 is a wasteful number, since it uses less digits than its factorization.

56745454765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11349090958.

The product of its digits is 70560000, while the sum is 58.

The spelling of 56745454765 in words is "fifty-six billion, seven hundred forty-five million, four hundred fifty-four thousand, seven hundred sixty-five".