13155612423 has 4 divisors (see below), whose sum is σ = 17540816568. Its totient is φ = 8770408280.

The previous prime is 13155612419. The next prime is 13155612467. The reversal of 13155612423 is 32421655131.

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 13155612423 - 2² = 13155612419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155612413) 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, 2192602068 + ... + 2192602073.

It is an arithmetic number, because the mean of its divisors is an integer number (4385204142).

Almost surely, 2^13155612423 is an apocalyptic number.

13155612423 is a deficient number, since it is larger than the sum of its proper divisors (4385204145).

13155612423 is an equidigital number, since it uses as much as digits as its factorization.

13155612423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385204144.

The product of its digits is 21600, while the sum is 33.

The spelling of 13155612423 in words is "thirteen billion, one hundred fifty-five million, six hundred twelve thousand, four hundred twenty-three".