64575906936 has 128 divisors (see below), whose sum is σ = 172627200000. Its totient is φ = 20070529920.

The previous prime is 64575906929. The next prime is 64575906973. The reversal of 64575906936 is 63960957546.

It is a self number, because there is not a number n which added to its sum of digits gives 64575906936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23924515 + ... + 23927213.

It is an arithmetic number, because the mean of its divisors is an integer number (1348650000).

Almost surely, 2^64575906936 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 64575906936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86313600000).

64575906936 is an abundant number, since it is smaller than the sum of its proper divisors (108051293064).

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

64575906936 is a wasteful number, since it uses less digits than its factorization.

64575906936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 60.

The spelling of 64575906936 in words is "sixty-four billion, five hundred seventy-five million, nine hundred six thousand, nine hundred thirty-six".