56705956280569 has 4 divisors (see below), whose sum is σ = 56707635346596. Its totient is φ = 56704277214544.

The previous prime is 56705956280549. The next prime is 56705956280587. The reversal of 56705956280569 is 96508265950765.

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 12888904172544 + 43817052108025 = 3590112^2 + 6619445^2 .

It is a cyclic number.

It is not a de Polignac number, because 56705956280569 - 2¹³ = 56705956272377 is a prime.

It is a super-2 number, since 2×56705956280569² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56705956280509) 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, 839482354 + ... + 839549899.

It is an arithmetic number, because the mean of its divisors is an integer number (14176908836649).

Almost surely, 2^{56705956280569} is an apocalyptic number.

It is an amenable number.

56705956280569 is a deficient number, since it is larger than the sum of its proper divisors (1679066027).

56705956280569 is a wasteful number, since it uses less digits than its factorization.

56705956280569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679066026.

The product of its (nonzero) digits is 1224720000, while the sum is 73.

The spelling of 56705956280569 in words is "fifty-six trillion, seven hundred five billion, nine hundred fifty-six million, two hundred eighty thousand, five hundred sixty-nine".