12455561413 has 4 divisors (see below), whose sum is σ = 12478332640. Its totient is φ = 12432790188.

The previous prime is 12455561407. The next prime is 12455561471. The reversal of 12455561413 is 31416555421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31416555421 = 86461 ⋅363361.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12455561413 is a prime.

It is a super-2 number, since 2×12455561413² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455561113) 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, 11384793 + ... + 11385886.

It is an arithmetic number, because the mean of its divisors is an integer number (3119583160).

Almost surely, 2^12455561413 is an apocalyptic number.

It is an amenable number.

12455561413 is a deficient number, since it is larger than the sum of its proper divisors (22771227).

12455561413 is an equidigital number, since it uses as much as digits as its factorization.

12455561413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22771226.

The product of its digits is 72000, while the sum is 37.

The spelling of 12455561413 in words is "twelve billion, four hundred fifty-five million, five hundred sixty-one thousand, four hundred thirteen".