15420630613 has 4 divisors (see below), whose sum is σ = 15485152320. Its totient is φ = 15356108908.

The previous prime is 15420630593. The next prime is 15420630619. The reversal of 15420630613 is 31603602451.

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-15420630613 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 (15420630619) 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, 32260495 + ... + 32260972.

It is an arithmetic number, because the mean of its divisors is an integer number (3871288080).

Almost surely, 2^15420630613 is an apocalyptic number.

It is an amenable number.

15420630613 is a deficient number, since it is larger than the sum of its proper divisors (64521707).

15420630613 is an equidigital number, since it uses as much as digits as its factorization.

15420630613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64521706.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 15420630613 in words is "fifteen billion, four hundred twenty million, six hundred thirty thousand, six hundred thirteen".