64520040570 has 32 divisors (see below), whose sum is σ = 155207404800. Its totient is φ = 17165421120.

The previous prime is 64520040569. The next prime is 64520040659. The reversal of 64520040570 is 7504002546.

64520040570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2482045 + ... + 2507904.

It is an arithmetic number, because the mean of its divisors is an integer number (4850231400).

Almost surely, 2^64520040570 is an apocalyptic number.

64520040570 is an abundant number, since it is smaller than the sum of its proper divisors (90687364230).

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

64520040570 is a wasteful number, since it uses less digits than its factorization.

64520040570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990390.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 64520040570 in words is "sixty-four billion, five hundred twenty million, forty thousand, five hundred seventy".