136808936690 has 32 divisors (see below), whose sum is σ = 247821132096. Its totient is φ = 54375935040.

The previous prime is 136808936591. The next prime is 136808936741. The reversal of 136808936690 is 96639808631.

It is a super-2 number, since 2×136808936690² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13757120 + ... + 13767060.

It is an arithmetic number, because the mean of its divisors is an integer number (7744410378).

Almost surely, 2^136808936690 is an apocalyptic number.

136808936690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136808936690 is a deficient number, since it is larger than the sum of its proper divisors (111012195406).

136808936690 is a wasteful number, since it uses less digits than its factorization.

136808936690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18554.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 136808936690 in words is "one hundred thirty-six billion, eight hundred eight million, nine hundred thirty-six thousand, six hundred ninety".