368636895921 has 16 divisors (see below), whose sum is σ = 586155561984. Its totient is φ = 201490973904.

The previous prime is 368636895883. The next prime is 368636895931. The reversal of 368636895921 is 129598636863.

It is a happy number.

It is not a de Polignac number, because 368636895921 - 2¹⁴ = 368636879537 is a prime.

It is a super-2 number, since 2×368636895921² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (368636895931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381611211 + ... + 381612176.

It is an arithmetic number, because the mean of its divisors is an integer number (36634722624).

Almost surely, 2^368636895921 is an apocalyptic number.

It is an amenable number.

368636895921 is a deficient number, since it is larger than the sum of its proper divisors (217518666063).

368636895921 is a wasteful number, since it uses less digits than its factorization.

368636895921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763223420.

The product of its digits is 100776960, while the sum is 66.

The spelling of 368636895921 in words is "three hundred sixty-eight billion, six hundred thirty-six million, eight hundred ninety-five thousand, nine hundred twenty-one".