64113706480 has 80 divisors (see below), whose sum is σ = 154360191744. Its totient is φ = 24739614720.

The previous prime is 64113706477. The next prime is 64113706537. The reversal of 64113706480 is 8460731146.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×64113706480² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745384 + ... + 826936.

Almost surely, 2^64113706480 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 64113706480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77180095872).

64113706480 is an abundant number, since it is smaller than the sum of its proper divisors (90246485264).

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

64113706480 is a wasteful number, since it uses less digits than its factorization.

64113706480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81914 (or 81908 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 64113706480 in words is "sixty-four billion, one hundred thirteen million, seven hundred six thousand, four hundred eighty".