64108718590 has 64 divisors (see below), whose sum is σ = 135737731584. Its totient is φ = 21339877248.

The previous prime is 64108718573. The next prime is 64108718591. The reversal of 64108718590 is 9581780146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64108718591) 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, 1183029 + ... + 1236031.

It is an arithmetic number, because the mean of its divisors is an integer number (2120902056).

Almost surely, 2^64108718590 is an apocalyptic number.

64108718590 is an abundant number, since it is smaller than the sum of its proper divisors (71629012994).

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

64108718590 is a wasteful number, since it uses less digits than its factorization.

64108718590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53521.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 64108718590 in words is "sixty-four billion, one hundred eight million, seven hundred eighteen thousand, five hundred ninety".