64758988318 has 32 divisors (see below), whose sum is σ = 103466151360. Its totient is φ = 30293429760.

The previous prime is 64758988271. The next prime is 64758988319. The reversal of 64758988318 is 81388985746.

It is a super-3 number, since 3×64758988318³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64758988319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5140255 + ... + 5152837.

It is an arithmetic number, because the mean of its divisors is an integer number (3233317230).

Almost surely, 2^64758988318 is an apocalyptic number.

64758988318 is a deficient number, since it is larger than the sum of its proper divisors (38707163042).

64758988318 is a wasteful number, since it uses less digits than its factorization.

64758988318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492.

The product of its digits is 92897280, while the sum is 67.

The spelling of 64758988318 in words is "sixty-four billion, seven hundred fifty-eight million, nine hundred eighty-eight thousand, three hundred eighteen".