12623969412 has 144 divisors (see below), whose sum is σ = 34679316672. Its totient is φ = 3856527360.

The previous prime is 12623969339. The next prime is 12623969419. The reversal of 12623969412 is 21496932621.

12623969412 is a `hidden beast` number, since 1 + 2 + 623 + 9 + 6 + 9 + 4 + 12 = 666.

It is a super-2 number, since 2×12623969412² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (12623969419) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12920668 + ... + 12921644.

It is an arithmetic number, because the mean of its divisors is an integer number (240828588).

Almost surely, 2^12623969412 is an apocalyptic number.

12623969412 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 12623969412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17339658336).

12623969412 is an abundant number, since it is smaller than the sum of its proper divisors (22055347260).

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

12623969412 is a wasteful number, since it uses less digits than its factorization.

12623969412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1533 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The spelling of 12623969412 in words is "twelve billion, six hundred twenty-three million, nine hundred sixty-nine thousand, four hundred twelve".