56736783638 has 16 divisors (see below), whose sum is σ = 85193228736. Its totient is φ = 28339059840.

The previous prime is 56736783613. The next prime is 56736783641. The reversal of 56736783638 is 83638763765.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14838995 + ... + 14842817.

It is an arithmetic number, because the mean of its divisors is an integer number (5324576796).

Almost surely, 2^56736783638 is an apocalyptic number.

56736783638 is a deficient number, since it is larger than the sum of its proper divisors (28456445098).

56736783638 is a wasteful number, since it uses less digits than its factorization.

56736783638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9559.

The product of its digits is 91445760, while the sum is 62.

The spelling of 56736783638 in words is "fifty-six billion, seven hundred thirty-six million, seven hundred eighty-three thousand, six hundred thirty-eight".