64368293976 has 160 divisors (see below), whose sum is σ = 213152148000. Its totient is φ = 17756734464.

The previous prime is 64368293909. The next prime is 64368293981. The reversal of 64368293976 is 67939286346.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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 39 ways as a sum of consecutive naturals, for example, 113121 + ... + 376208.

It is an arithmetic number, because the mean of its divisors is an integer number (1332200925).

Almost surely, 2^64368293976 is an apocalyptic number.

It is an amenable number.

64368293976 is an abundant number, since it is smaller than the sum of its proper divisors (148783854024).

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

64368293976 is a wasteful number, since it uses less digits than its factorization.

64368293976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489383 (or 489370 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The spelling of 64368293976 in words is "sixty-four billion, three hundred sixty-eight million, two hundred ninety-three thousand, nine hundred seventy-six".