13345427915 has 4 divisors (see below), whose sum is σ = 16014513504. Its totient is φ = 10676342328.

The previous prime is 13345427911. The next prime is 13345427951. The reversal of 13345427915 is 51972454331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13345427915 - 2² = 13345427911 is a prime.

It is a super-2 number, since 2×13345427915² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13345427911) 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, 1334542787 + ... + 1334542796.

It is an arithmetic number, because the mean of its divisors is an integer number (4003628376).

Almost surely, 2^13345427915 is an apocalyptic number.

13345427915 is a deficient number, since it is larger than the sum of its proper divisors (2669085589).

13345427915 is an equidigital number, since it uses as much as digits as its factorization.

13345427915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669085588.

The product of its digits is 453600, while the sum is 44.

The spelling of 13345427915 in words is "thirteen billion, three hundred forty-five million, four hundred twenty-seven thousand, nine hundred fifteen".