64937044480 has 320 divisors, whose sum is σ = 202569320448. Its totient is φ = 19358760960.

The previous prime is 64937044463. The next prime is 64937044481. The reversal of 64937044480 is 8444073946.

It is a tau number, because it is divible by the number of its divisors (320).

It is not an unprimeable number, because it can be changed into a prime (64937044481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4526599 + ... + 4540921.

Almost surely, 2^64937044480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64937044480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101284660224).

64937044480 is an abundant number, since it is smaller than the sum of its proper divisors (137632275968).

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

64937044480 is a wasteful number, since it uses less digits than its factorization.

64937044480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14387 (or 14371 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 64937044480 in words is "sixty-four billion, nine hundred thirty-seven million, forty-four thousand, four hundred eighty".