56661224977 has 8 divisors (see below), whose sum is σ = 66335092992. Its totient is φ = 47382208800.

The previous prime is 56661224941. The next prime is 56661225007. The reversal of 56661224977 is 77942216665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56661224977 - 2⁷ = 56661224849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56661224177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98712649 + ... + 98713222.

It is an arithmetic number, because the mean of its divisors is an integer number (8291886624).

Almost surely, 2^56661224977 is an apocalyptic number.

It is an amenable number.

56661224977 is a deficient number, since it is larger than the sum of its proper divisors (9673868015).

56661224977 is a wasteful number, since it uses less digits than its factorization.

56661224977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197425919.

The product of its digits is 7620480, while the sum is 55.

The spelling of 56661224977 in words is "fifty-six billion, six hundred sixty-one million, two hundred twenty-four thousand, nine hundred seventy-seven".