64864368380 has 72 divisors (see below), whose sum is σ = 163565894016. Its totient is φ = 21521808000.

The previous prime is 64864368379. The next prime is 64864368383. The reversal of 64864368380 is 8386346846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64864368383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1037171 + ... + 1097930.

It is an arithmetic number, because the mean of its divisors is an integer number (2271748528).

Almost surely, 2^64864368380 is an apocalyptic number.

It is an amenable number.

64864368380 is an abundant number, since it is smaller than the sum of its proper divisors (98701525636).

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

64864368380 is a wasteful number, since it uses less digits than its factorization.

64864368380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135155 (or 2135146 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 56.

The spelling of 64864368380 in words is "sixty-four billion, eight hundred sixty-four million, three hundred sixty-eight thousand, three hundred eighty".