12420553013 has 4 divisors (see below), whose sum is σ = 13549694208. Its totient is φ = 11291411820.

The previous prime is 12420553001. The next prime is 12420553037. The reversal of 12420553013 is 31035502421.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12420553013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420556013) 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, 564570581 + ... + 564570602.

It is an arithmetic number, because the mean of its divisors is an integer number (3387423552).

Almost surely, 2^12420553013 is an apocalyptic number.

It is an amenable number.

12420553013 is a deficient number, since it is larger than the sum of its proper divisors (1129141195).

12420553013 is a wasteful number, since it uses less digits than its factorization.

12420553013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129141194.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 12420553013 in words is "twelve billion, four hundred twenty million, five hundred fifty-three thousand, thirteen".