12569989452 has 12 divisors (see below), whose sum is σ = 29329975416. Its totient is φ = 4189996480.

The previous prime is 12569989427. The next prime is 12569989483. The reversal of 12569989452 is 25498996521.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523749549 + ... + 523749572.

It is an arithmetic number, because the mean of its divisors is an integer number (2444164618).

Almost surely, 2^12569989452 is an apocalyptic number.

12569989452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12569989452 is an abundant number, since it is smaller than the sum of its proper divisors (16759985964).

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

12569989452 is a wasteful number, since it uses less digits than its factorization.

12569989452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047499128 (or 1047499126 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 60.

The spelling of 12569989452 in words is "twelve billion, five hundred sixty-nine million, nine hundred eighty-nine thousand, four hundred fifty-two".