64564334160 has 40 divisors (see below), whose sum is σ = 200149436640. Its totient is φ = 17217155712.

The previous prime is 64564334143. The next prime is 64564334183. The reversal of 64564334160 is 6143346546.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134508790 + ... + 134509269.

It is an arithmetic number, because the mean of its divisors is an integer number (5003735916).

Almost surely, 2^64564334160 is an apocalyptic number.

64564334160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64564334160 is an abundant number, since it is smaller than the sum of its proper divisors (135585102480).

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

64564334160 is a wasteful number, since it uses less digits than its factorization.

64564334160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269018075 (or 269018069 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 64564334160 in words is "sixty-four billion, five hundred sixty-four million, three hundred thirty-four thousand, one hundred sixty".