12696818652 has 288 divisors, whose sum is σ = 38613120000. Its totient is φ = 3515073408.

The previous prime is 12696818633. The next prime is 12696818663. The reversal of 12696818652 is 25681869621.

It is a super-2 number, since 2×12696818652² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 85213474 + ... + 85213622.

Almost surely, 2^12696818652 is an apocalyptic number.

12696818652 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 12696818652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19306560000).

12696818652 is an abundant number, since it is smaller than the sum of its proper divisors (25916301348).

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

12696818652 is a wasteful number, since it uses less digits than its factorization.

12696818652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 331 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 12696818652 in words is "twelve billion, six hundred ninety-six million, eight hundred eighteen thousand, six hundred fifty-two".