64636228799 has 2 divisors, whose sum is σ = 64636228800. Its totient is φ = 64636228798.

The previous prime is 64636228793. The next prime is 64636228823. The reversal of 64636228799 is 99782263646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64636228799 - 2²⁰ = 64635180223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64636228793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32318114399 + 32318114400.

It is an arithmetic number, because the mean of its divisors is an integer number (32318114400).

Almost surely, 2^64636228799 is an apocalyptic number.

64636228799 is a deficient number, since it is larger than the sum of its proper divisors (1).

64636228799 is an equidigital number, since it uses as much as digits as its factorization.

64636228799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 62.

The spelling of 64636228799 in words is "sixty-four billion, six hundred thirty-six million, two hundred twenty-eight thousand, seven hundred ninety-nine".