12569997456 has 45 divisors (see below), whose sum is σ = 35182300179. Its totient is φ = 4189550688.

The previous prime is 12569997437. The next prime is 12569997497. The reversal of 12569997456 is 65479996521.

The square root of 12569997456 is 112116.

It is a perfect power (a square), and thus also a powerful number.

12569997456 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 99 + 97 + 456 = 666.

12569997456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12569997393 and 12569997402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1340721 + ... + 1350063.

Almost surely, 2^12569997456 is an apocalyptic number.

12569997456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12569997456 is the 112116-th square number.

It is an amenable number.

12569997456 is an abundant number, since it is smaller than the sum of its proper divisors (22612302723).

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

12569997456 is an frugal number, since it uses more digits than its factorization.

12569997456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18700 (or 9348 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

It can be divided in two parts, 12569 and 997456, that added together give a square (1010025 = 1005²).

The spelling of 12569997456 in words is "twelve billion, five hundred sixty-nine million, nine hundred ninety-seven thousand, four hundred fifty-six".