12455547013 has 36 divisors (see below), whose sum is σ = 15905900388. Its totient is φ = 9667607040.

The previous prime is 12455547001. The next prime is 12455547043. The reversal of 12455547013 is 31074555421.

It can be written as a sum of positive squares in 6 ways, for example, as 417507489 + 12038039524 = 20433^2 + 109718^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12455547013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455547043) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1785853 + ... + 1792813.

Almost surely, 2^12455547013 is an apocalyptic number.

12455547013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12455547013 is a deficient number, since it is larger than the sum of its proper divisors (3450353375).

12455547013 is an equidigital number, since it uses as much as digits as its factorization.

12455547013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094 (or 7034 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 12455547013 in words is "twelve billion, four hundred fifty-five million, five hundred forty-seven thousand, thirteen".