56717273773 has 4 divisors (see below), whose sum is σ = 57787411068. Its totient is φ = 55647136480.

The previous prime is 56717273761. The next prime is 56717273779. The reversal of 56717273773 is 37737271765.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37737271765 = 5 ⋅7547454353.

It can be written as a sum of positive squares in 2 ways, for example, as 38477960964 + 18239312809 = 196158^2 + 135053^2 .

It is a cyclic number.

It is not a de Polignac number, because 56717273773 - 2¹⁷ = 56717142701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56717273779) 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, 535068568 + ... + 535068673.

It is an arithmetic number, because the mean of its divisors is an integer number (14446852767).

Almost surely, 2^56717273773 is an apocalyptic number.

56717273773 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

56717273773 is a deficient number, since it is larger than the sum of its proper divisors (1070137295).

56717273773 is a wasteful number, since it uses less digits than its factorization.

56717273773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070137294.

The product of its digits is 9075780, while the sum is 55.

The spelling of 56717273773 in words is "fifty-six billion, seven hundred seventeen million, two hundred seventy-three thousand, seven hundred seventy-three".