136664466631 has 32 divisors (see below), whose sum is σ = 172181822976. Its totient is φ = 105371280000.

The previous prime is 136664466583. The next prime is 136664466647.

136664466631 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 136664466631 - 2¹⁹ = 136663942343 is a prime.

It is a super-2 number, since 2×136664466631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136664466691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15028396 + ... + 15037486.

It is an arithmetic number, because the mean of its divisors is an integer number (5380681968).

Almost surely, 2^136664466631 is an apocalyptic number.

136664466631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136664466631 is a deficient number, since it is larger than the sum of its proper divisors (35517356345).

136664466631 is a wasteful number, since it uses less digits than its factorization.

136664466631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11143.

The product of its digits is 6718464, while the sum is 52.

The spelling of 136664466631 in words is "one hundred thirty-six billion, six hundred sixty-four million, four hundred sixty-six thousand, six hundred thirty-one".