64710538416 has 120 divisors (see below), whose sum is σ = 189470321040. Its totient is φ = 21379147776.

The previous prime is 64710538411. The next prime is 64710538429. The reversal of 64710538416 is 61483501746.

64710538416 is a `hidden beast` number, since 6 + 4 + 71 + 0 + 538 + 41 + 6 = 666.

It is a super-2 number, since 2×64710538416² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64710538411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 365700 + ... + 512988.

It is an arithmetic number, because the mean of its divisors is an integer number (1578919342).

Almost surely, 2^64710538416 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 64710538416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94735160520).

64710538416 is an abundant number, since it is smaller than the sum of its proper divisors (124759782624).

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

64710538416 is a wasteful number, since it uses less digits than its factorization.

64710538416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147425 (or 147407 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 64710538416 in words is "sixty-four billion, seven hundred ten million, five hundred thirty-eight thousand, four hundred sixteen".