13261504223 has 4 divisors (see below), whose sum is σ = 14467095528. Its totient is φ = 12055912920.

The previous prime is 13261504213. The next prime is 13261504247. The reversal of 13261504223 is 32240516231.

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 13261504223 - 2⁶ = 13261504159 is a prime.

It is a super-4 number, since 4×13261504223⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261504213) 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, 602795636 + ... + 602795657.

It is an arithmetic number, because the mean of its divisors is an integer number (3616773882).

Almost surely, 2^13261504223 is an apocalyptic number.

13261504223 is a deficient number, since it is larger than the sum of its proper divisors (1205591305).

13261504223 is a wasteful number, since it uses less digits than its factorization.

13261504223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205591304.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 13261504223 in words is "thirteen billion, two hundred sixty-one million, five hundred four thousand, two hundred twenty-three".