64572195579894 has 48 divisors (see below), whose sum is σ = 140418206669520. Its totient is φ = 21445336785600.

The previous prime is 64572195579893. The next prime is 64572195579901. The reversal of 64572195579894 is 49897559127546.

64572195579894 is a `hidden beast` number, since 6 + 4 + 57 + 2 + 1 + 9 + 557 + 9 + 8 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64572195579893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107902797 + ... + 108499575.

It is an arithmetic number, because the mean of its divisors is an integer number (2925379305615).

Almost surely, 2^{64572195579894} is an apocalyptic number.

64572195579894 is an abundant number, since it is smaller than the sum of its proper divisors (75846011089626).

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

64572195579894 is a wasteful number, since it uses less digits than its factorization.

64572195579894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618765 (or 618762 counting only the distinct ones).

The product of its digits is 6858432000, while the sum is 81.

The spelling of 64572195579894 in words is "sixty-four trillion, five hundred seventy-two billion, one hundred ninety-five million, five hundred seventy-nine thousand, eight hundred ninety-four".