56611040617 has 4 divisors (see below), whose sum is σ = 57570549840. Its totient is φ = 55651531396.

The previous prime is 56611040581. The next prime is 56611040623. The reversal of 56611040617 is 71604011665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71604011665 = 5 ⋅14320802333.

It is a cyclic number.

It is not a de Polignac number, because 56611040617 - 2¹⁹ = 56610516329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56611040627) 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, 479754523 + ... + 479754640.

It is an arithmetic number, because the mean of its divisors is an integer number (14392637460).

Almost surely, 2^56611040617 is an apocalyptic number.

It is an amenable number.

56611040617 is a deficient number, since it is larger than the sum of its proper divisors (959509223).

56611040617 is an equidigital number, since it uses as much as digits as its factorization.

56611040617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959509222.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 56611040617 in words is "fifty-six billion, six hundred eleven million, forty thousand, six hundred seventeen".