64989388799 has 8 divisors (see below), whose sum is σ = 66221520192. Its totient is φ = 63757476640.

The previous prime is 64989388781. The next prime is 64989388801. The reversal of 64989388799 is 99788398946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64989388799 - 2⁸ = 64989388543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64989388999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622154 + ... + 719064.

It is an arithmetic number, because the mean of its divisors is an integer number (8277690024).

Almost surely, 2^64989388799 is an apocalyptic number.

64989388799 is a deficient number, since it is larger than the sum of its proper divisors (1232131393).

64989388799 is a wasteful number, since it uses less digits than its factorization.

64989388799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109617.

The product of its digits is 1693052928, while the sum is 80.

The spelling of 64989388799 in words is "sixty-four billion, nine hundred eighty-nine million, three hundred eighty-eight thousand, seven hundred ninety-nine".