12690565244 has 24 divisors (see below), whose sum is σ = 25385136000. Its totient is φ = 5437955376.

The previous prime is 12690565187. The next prime is 12690565289. The reversal of 12690565244 is 44256509621.

It is a super-2 number, since 2×12690565244² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12690565195 and 12690565204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164507 + ... + 229005.

It is an arithmetic number, because the mean of its divisors is an integer number (1057714000).

Almost surely, 2^12690565244 is an apocalyptic number.

12690565244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12690565244 is an abundant number, since it is smaller than the sum of its proper divisors (12694570756).

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

12690565244 is a wasteful number, since it uses less digits than its factorization.

12690565244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71537 (or 71535 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 12690565244 in words is "twelve billion, six hundred ninety million, five hundred sixty-five thousand, two hundred forty-four".