56777770061 has 4 divisors (see below), whose sum is σ = 56818356000. Its totient is φ = 56737184124.

The previous prime is 56777770043. The next prime is 56777770069. The reversal of 56777770061 is 16007777765.

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 56777770061 - 2²² = 56773575757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56777769985 and 56777770012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56777770069) 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, 20290871 + ... + 20293668.

It is an arithmetic number, because the mean of its divisors is an integer number (14204589000).

Almost surely, 2^56777770061 is an apocalyptic number.

It is an amenable number.

56777770061 is a deficient number, since it is larger than the sum of its proper divisors (40585939).

56777770061 is a wasteful number, since it uses less digits than its factorization.

56777770061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40585938.

The product of its (nonzero) digits is 3025260, while the sum is 53.

The spelling of 56777770061 in words is "fifty-six billion, seven hundred seventy-seven million, seven hundred seventy thousand, sixty-one".