64807018908 has 72 divisors (see below), whose sum is σ = 160813699200. Its totient is φ = 20308972320.

The previous prime is 64807018867. The next prime is 64807018919. The reversal of 64807018908 is 80981070846.

64807018908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510393 + ... + 624591.

It is an arithmetic number, because the mean of its divisors is an integer number (2233523600).

Almost surely, 2^64807018908 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 64807018908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80406849600).

64807018908 is an abundant number, since it is smaller than the sum of its proper divisors (96006680292).

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

64807018908 is a wasteful number, since it uses less digits than its factorization.

64807018908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114375 (or 114354 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 51.

The spelling of 64807018908 in words is "sixty-four billion, eight hundred seven million, eighteen thousand, nine hundred eight".