56639632699 has 8 divisors (see below), whose sum is σ = 61142109840. Its totient is φ = 52157953056.

The previous prime is 56639632669. The next prime is 56639632711. The reversal of 56639632699 is 99623693665.

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 56639632699 - 2²¹ = 56637535547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56639632699.

It is not an unprimeable number, because it can be changed into a prime (56639632669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5193712 + ... + 5204605.

It is an arithmetic number, because the mean of its divisors is an integer number (7642763730).

Almost surely, 2^56639632699 is an apocalyptic number.

56639632699 is a deficient number, since it is larger than the sum of its proper divisors (4502477141).

56639632699 is a wasteful number, since it uses less digits than its factorization.

56639632699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10398749.

The product of its digits is 85030560, while the sum is 64.

The spelling of 56639632699 in words is "fifty-six billion, six hundred thirty-nine million, six hundred thirty-two thousand, six hundred ninety-nine".