64870391439360 has 1344 divisors, whose sum is σ = 246071179501056. Its totient is φ = 15712911360000.

The previous prime is 64870391439319. The next prime is 64870391439361. The reversal of 64870391439360 is 6393419307846.

64870391439360 is a `hidden beast` number, since 6 + 4 + 87 + 0 + 3 + 91 + 439 + 36 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64870391439361) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107937423060 + ... + 107937423660.

It is an arithmetic number, because the mean of its divisors is an integer number (183088675224).

Almost surely, 2^{64870391439360} is an apocalyptic number.

64870391439360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64870391439360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123035589750528).

64870391439360 is an abundant number, since it is smaller than the sum of its proper divisors (181200788061696).

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

64870391439360 is a wasteful number, since it uses less digits than its factorization.

64870391439360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 948 counting only the distinct ones).

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

The spelling of 64870391439360 in words is "sixty-four trillion, eight hundred seventy billion, three hundred ninety-one million, four hundred thirty-nine thousand, three hundred sixty".