13215198423 has 24 divisors (see below), whose sum is σ = 20708374512. Its totient is φ = 7473682944.

The previous prime is 13215198401. The next prime is 13215198439. The reversal of 13215198423 is 32489151231.

It is not a de Polignac number, because 13215198423 - 2⁸ = 13215198167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215198473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 449140 + ... + 477657.

It is an arithmetic number, because the mean of its divisors is an integer number (862848938).

Almost surely, 2^13215198423 is an apocalyptic number.

13215198423 is a deficient number, since it is larger than the sum of its proper divisors (7493176089).

13215198423 is an equidigital number, since it uses as much as digits as its factorization.

13215198423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926911 (or 926904 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The spelling of 13215198423 in words is "thirteen billion, two hundred fifteen million, one hundred ninety-eight thousand, four hundred twenty-three".