64397182756 has 27 divisors (see below), whose sum is σ = 116476120593. Its totient is φ = 31152314160.

The previous prime is 64397182721. The next prime is 64397182757. The reversal of 64397182756 is 65728179346.

The square root of 64397182756 is 253766.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 26689756900 + 37707425856 = 163370^2 + 194184^2 .

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 64397182756.

It is not an unprimeable number, because it can be changed into a prime (64397182757) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15731446 + ... + 15735538.

Almost surely, 2^64397182756 is an apocalyptic number.

64397182756 is the 253766-th square number.

It is an amenable number.

64397182756 is a deficient number, since it is larger than the sum of its proper divisors (52078937837).

64397182756 is an frugal number, since it uses more digits than its factorization.

64397182756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252 (or 4126 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 58.

The spelling of 64397182756 in words is "sixty-four billion, three hundred ninety-seven million, one hundred eighty-two thousand, seven hundred fifty-six".