136863963999 has 24 divisors (see below), whose sum is σ = 226813310880. Its totient is φ = 77903659008.

The previous prime is 136863963959. The next prime is 136863964009. The reversal of 136863963999 is 999369368631.

136863963999 is a `hidden beast` number, since 1 + 368 + 63 + 96 + 39 + 99 = 666.

It is not a de Polignac number, because 136863963999 - 2⁷ = 136863963871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136863963959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4210354 + ... + 4242735.

It is an arithmetic number, because the mean of its divisors is an integer number (9450554620).

Almost surely, 2^136863963999 is an apocalyptic number.

136863963999 is a deficient number, since it is larger than the sum of its proper divisors (89949346881).

136863963999 is a wasteful number, since it uses less digits than its factorization.

136863963999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453359 (or 8453356 counting only the distinct ones).

The product of its digits is 306110016, while the sum is 72.

The spelling of 136863963999 in words is "one hundred thirty-six billion, eight hundred sixty-three million, nine hundred sixty-three thousand, nine hundred ninety-nine".