13325261918 has 16 divisors (see below), whose sum is σ = 20532929424. Its totient is φ = 6481036800.

The previous prime is 13325261891. The next prime is 13325261921. The reversal of 13325261918 is 81916252331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336521 + ... + 374027.

It is an arithmetic number, because the mean of its divisors is an integer number (1283308089).

Almost surely, 2^13325261918 is an apocalyptic number.

13325261918 is a deficient number, since it is larger than the sum of its proper divisors (7207667506).

13325261918 is a wasteful number, since it uses less digits than its factorization.

13325261918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42347.

The product of its digits is 77760, while the sum is 41.

The spelling of 13325261918 in words is "thirteen billion, three hundred twenty-five million, two hundred sixty-one thousand, nine hundred eighteen".