12664699632 has 120 divisors (see below), whose sum is σ = 38200086288. Its totient is φ = 3893760000.

The previous prime is 12664699613. The next prime is 12664699643. The reversal of 12664699632 is 23699646621.

12664699632 is a `hidden beast` number, since 1 + 2 + 66 + 469 + 96 + 32 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 3894007 + ... + 3897257.

Almost surely, 2^12664699632 is an apocalyptic number.

12664699632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12664699632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19100043144).

12664699632 is an abundant number, since it is smaller than the sum of its proper divisors (25535386656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12664699632 is a wasteful number, since it uses less digits than its factorization.

12664699632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5359 (or 5350 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The spelling of 12664699632 in words is "twelve billion, six hundred sixty-four million, six hundred ninety-nine thousand, six hundred thirty-two".