12497916736 has 28 divisors (see below), whose sum is σ = 24808581828. Its totient is φ = 6246935552.

The previous prime is 12497916727. The next prime is 12497916737. The reversal of 12497916736 is 63761979421.

It can be written as a sum of positive squares in 2 ways, for example, as 7293160000 + 5204756736 = 85400^2 + 72144^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12497916737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178470 + ... + 238426.

Almost surely, 2^12497916736 is an apocalyptic number.

12497916736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12497916736 is a deficient number, since it is larger than the sum of its proper divisors (12310665092).

12497916736 is an equidigital number, since it uses as much as digits as its factorization.

12497916736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63226 (or 63216 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The spelling of 12497916736 in words is "twelve billion, four hundred ninety-seven million, nine hundred sixteen thousand, seven hundred thirty-six".