13309775423 has 16 divisors (see below), whose sum is σ = 15571666176. Its totient is φ = 11138238720.

The previous prime is 13309775419. The next prime is 13309775441. The reversal of 13309775423 is 32457790331.

It is a Cunningham number, because it is equal to 115368²-1.

It is not a de Polignac number, because 13309775423 - 2² = 13309775419 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 (13309775023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799343 + ... + 815823.

It is an arithmetic number, because the mean of its divisors is an integer number (973229136).

Almost surely, 2^13309775423 is an apocalyptic number.

13309775423 is a deficient number, since it is larger than the sum of its proper divisors (2261890753).

13309775423 is a wasteful number, since it uses less digits than its factorization.

13309775423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19214.

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 13309775423 in words is "thirteen billion, three hundred nine million, seven hundred seventy-five thousand, four hundred twenty-three".