12699929844 has 48 divisors (see below), whose sum is σ = 37629424000. Its totient is φ = 3628551168.

The previous prime is 12699929843. The next prime is 12699929887. The reversal of 12699929844 is 44892999621.

It is a super-2 number, since 2×12699929844² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12699929843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8398669 + ... + 8400180.

Almost surely, 2^12699929844 is an apocalyptic number.

12699929844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12699929844 is an abundant number, since it is smaller than the sum of its proper divisors (24929494156).

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

12699929844 is a wasteful number, since it uses less digits than its factorization.

12699929844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16798869 (or 16798861 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 12699929844 in words is "twelve billion, six hundred ninety-nine million, nine hundred twenty-nine thousand, eight hundred forty-four".