12652561456 has 10 divisors (see below), whose sum is σ = 24514337852. Its totient is φ = 6326280720.

The previous prime is 12652561451. The next prime is 12652561463. The reversal of 12652561456 is 65416525621.

It is a super-2 number, since 2×12652561456² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12652561451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395392530 + ... + 395392561.

Almost surely, 2^12652561456 is an apocalyptic number.

12652561456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12652561456 is a deficient number, since it is larger than the sum of its proper divisors (11861776396).

12652561456 is an equidigital number, since it uses as much as digits as its factorization.

12652561456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790785099 (or 790785093 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The spelling of 12652561456 in words is "twelve billion, six hundred fifty-two million, five hundred sixty-one thousand, four hundred fifty-six".