13975521826 has 32 divisors (see below), whose sum is σ = 24908752512. Its totient is φ = 5756192640.

The previous prime is 13975521821. The next prime is 13975521853. The reversal of 13975521826 is 62812557931.

It is a self number, because there is not a number n which added to its sum of digits gives 13975521826.

It is not an unprimeable number, because it can be changed into a prime (13975521821) 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, 143241 + ... + 220156.

It is an arithmetic number, because the mean of its divisors is an integer number (778398516).

Almost surely, 2^13975521826 is an apocalyptic number.

13975521826 is a deficient number, since it is larger than the sum of its proper divisors (10933230686).

13975521826 is a wasteful number, since it uses less digits than its factorization.

13975521826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363514.

The product of its digits is 907200, while the sum is 49.

The spelling of 13975521826 in words is "thirteen billion, nine hundred seventy-five million, five hundred twenty-one thousand, eight hundred twenty-six".