56061376661 has 4 divisors (see below), whose sum is σ = 56088292512. Its totient is φ = 56034460812.

The previous prime is 56061376603. The next prime is 56061376667. The reversal of 56061376661 is 16667316065.

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.

It is a cyclic number.

It is not a de Polignac number, because 56061376661 - 2³⁰ = 54987634837 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 (56061376667) 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, 13454801 + ... + 13458966.

It is an arithmetic number, because the mean of its divisors is an integer number (14022073128).

Almost surely, 2^56061376661 is an apocalyptic number.

It is an amenable number.

56061376661 is a deficient number, since it is larger than the sum of its proper divisors (26915851).

56061376661 is a wasteful number, since it uses less digits than its factorization.

56061376661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26915850.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 56061376661 in words is "fifty-six billion, sixty-one million, three hundred seventy-six thousand, six hundred sixty-one".