56776620599 has 4 divisors (see below), whose sum is σ = 56877467736. Its totient is φ = 56675773464.

The previous prime is 56776620503. The next prime is 56776620613. The reversal of 56776620599 is 99502667765.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56776620599 - 2⁸ = 56776620343 is a prime.

It is a super-3 number, since 3×56776620599³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56776620499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50422724 + ... + 50423849.

It is an arithmetic number, because the mean of its divisors is an integer number (14219366934).

Almost surely, 2^56776620599 is an apocalyptic number.

56776620599 is a deficient number, since it is larger than the sum of its proper divisors (100847137).

56776620599 is a wasteful number, since it uses less digits than its factorization.

56776620599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100847136.

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 56776620599 in words is "fifty-six billion, seven hundred seventy-six million, six hundred twenty thousand, five hundred ninety-nine".