13263826387 has 16 divisors (see below), whose sum is σ = 15312952512. Its totient is φ = 11253749760.

The previous prime is 13263826379. The next prime is 13263826409. The reversal of 13263826387 is 78362836231.

It is a cyclic number.

It is not a de Polignac number, because 13263826387 - 2³ = 13263826379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13263826387.

It is not an unprimeable number, because it can be changed into a prime (13263826327) 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, 318937 + ... + 358117.

It is an arithmetic number, because the mean of its divisors is an integer number (957059532).

Almost surely, 2^13263826387 is an apocalyptic number.

13263826387 is a deficient number, since it is larger than the sum of its proper divisors (2049126125).

13263826387 is a wasteful number, since it uses less digits than its factorization.

13263826387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39678.

The product of its digits is 1741824, while the sum is 49.

The spelling of 13263826387 in words is "thirteen billion, two hundred sixty-three million, eight hundred twenty-six thousand, three hundred eighty-seven".