64396823299 has 4 divisors (see below), whose sum is σ = 64653384600. Its totient is φ = 64140262000.

The previous prime is 64396823297. The next prime is 64396823317. The reversal of 64396823299 is 99232869346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64396823299 - 2¹ = 64396823297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64396823297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128280274 + ... + 128280775.

It is an arithmetic number, because the mean of its divisors is an integer number (16163346150).

Almost surely, 2^64396823299 is an apocalyptic number.

64396823299 is a deficient number, since it is larger than the sum of its proper divisors (256561301).

64396823299 is a wasteful number, since it uses less digits than its factorization.

64396823299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256561300.

The product of its digits is 30233088, while the sum is 61.

The spelling of 64396823299 in words is "sixty-four billion, three hundred ninety-six million, eight hundred twenty-three thousand, two hundred ninety-nine".