12694044672 has 180 divisors, whose sum is σ = 37867118016. Its totient is φ = 4093378560.

The previous prime is 12694044667. The next prime is 12694044677. The reversal of 12694044672 is 27644049621.

It is an interprime number because it is at equal distance from previous prime (12694044667) and next prime (12694044677).

It is a super-2 number, since 2×12694044672² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12694044677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4569748 + ... + 4572524.

Almost surely, 2^12694044672 is an apocalyptic number.

12694044672 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 12694044672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18933559008).

12694044672 is an abundant number, since it is smaller than the sum of its proper divisors (25173073344).

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

12694044672 is an equidigital number, since it uses as much as digits as its factorization.

12694044672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 12694044672 in words is "twelve billion, six hundred ninety-four million, forty-four thousand, six hundred seventy-two".