56721336722 has 16 divisors (see below), whose sum is σ = 87192454272. Its totient is φ = 27659182320.

The previous prime is 56721336713. The next prime is 56721336779. The reversal of 56721336722 is 22763312765.

It is a happy 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, 442058 + ... + 555749.

It is an arithmetic number, because the mean of its divisors is an integer number (5449528392).

Almost surely, 2^56721336722 is an apocalyptic number.

56721336722 is a deficient number, since it is larger than the sum of its proper divisors (30471117550).

56721336722 is a wasteful number, since it uses less digits than its factorization.

56721336722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998513.

The product of its digits is 635040, while the sum is 44.

The spelling of 56721336722 in words is "fifty-six billion, seven hundred twenty-one million, three hundred thirty-six thousand, seven hundred twenty-two".