64892318399 has 8 divisors (see below), whose sum is σ = 65409865728. Its totient is φ = 64374874200.

The previous prime is 64892318389. The next prime is 64892318431. The reversal of 64892318399 is 99381329846.

It is a happy number.

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 64892318399 - 2¹⁶ = 64892252863 is a prime.

It is a super-2 number, since 2×64892318399² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64892318389) 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, 1689284 + ... + 1727270.

It is an arithmetic number, because the mean of its divisors is an integer number (8176233216).

Almost surely, 2^64892318399 is an apocalyptic number.

64892318399 is a deficient number, since it is larger than the sum of its proper divisors (517547329).

64892318399 is a wasteful number, since it uses less digits than its factorization.

64892318399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51565.

The product of its digits is 20155392, while the sum is 62.

The spelling of 64892318399 in words is "sixty-four billion, eight hundred ninety-two million, three hundred eighteen thousand, three hundred ninety-nine".