12689932552 has 16 divisors (see below), whose sum is σ = 25956680400. Its totient is φ = 5768151120.

The previous prime is 12689932529. The next prime is 12689932571. The reversal of 12689932552 is 25523998621.

It is a super-2 number, since 2×12689932552² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12689932552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72101802 + ... + 72101977.

It is an arithmetic number, because the mean of its divisors is an integer number (1622292525).

Almost surely, 2^12689932552 is an apocalyptic number.

It is an amenable number.

12689932552 is an abundant number, since it is smaller than the sum of its proper divisors (13266747848).

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

12689932552 is a wasteful number, since it uses less digits than its factorization.

12689932552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144203796 (or 144203792 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 52.

The spelling of 12689932552 in words is "twelve billion, six hundred eighty-nine million, nine hundred thirty-two thousand, five hundred fifty-two".