136636636631 has 8 divisors (see below), whose sum is σ = 149183107344. Its totient is φ = 124110992320.

The previous prime is 136636636597. The next prime is 136636636637.

136636636631 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136636636631 - 2¹⁸ = 136636374487 is a prime.

It is a super-2 number, since 2×136636636631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136636636631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136636636637) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5192876 + ... + 5219121.

It is an arithmetic number, because the mean of its divisors is an integer number (18647888418).

Almost surely, 2^136636636631 is an apocalyptic number.

136636636631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136636636631 is a deficient number, since it is larger than the sum of its proper divisors (12546470713).

136636636631 is a wasteful number, since it uses less digits than its factorization.

136636636631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10413201.

The product of its digits is 3779136, while the sum is 50.

The spelling of 136636636631 in words is "one hundred thirty-six billion, six hundred thirty-six million, six hundred thirty-six thousand, six hundred thirty-one".