64722256100 has 18 divisors (see below), whose sum is σ = 140447295954. Its totient is φ = 25888902400.

The previous prime is 64722256043. The next prime is 64722256139. The reversal of 64722256100 is 165222746.

64722256100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2796928996 + 61925327104 = 52886^2 + 248848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323611181 + ... + 323611380.

It is an arithmetic number, because the mean of its divisors is an integer number (7802627553).

Almost surely, 2^64722256100 is an apocalyptic number.

It is an amenable number.

64722256100 is an abundant number, since it is smaller than the sum of its proper divisors (75725039854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64722256100 is a wasteful number, since it uses less digits than its factorization.

64722256100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647222575 (or 647222568 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 64722256100 its reverse (165222746), we get a palindrome (64887478846).

The spelling of 64722256100 in words is "sixty-four billion, seven hundred twenty-two million, two hundred fifty-six thousand, one hundred".