64789564799 has 2 divisors, whose sum is σ = 64789564800. Its totient is φ = 64789564798.

The previous prime is 64789564769. The next prime is 64789564837. The reversal of 64789564799 is 99746598746.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64789564799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64789564769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32394782399 + 32394782400.

It is an arithmetic number, because the mean of its divisors is an integer number (32394782400).

Almost surely, 2^64789564799 is an apocalyptic number.

64789564799 is a deficient number, since it is larger than the sum of its proper divisors (1).

64789564799 is an equidigital number, since it uses as much as digits as its factorization.

64789564799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823011840, while the sum is 74.

The spelling of 64789564799 in words is "sixty-four billion, seven hundred eighty-nine million, five hundred sixty-four thousand, seven hundred ninety-nine".