13205886940 has 12 divisors (see below), whose sum is σ = 27732362616. Its totient is φ = 5282354768.

The previous prime is 13205886937. The next prime is 13205886971. The reversal of 13205886940 is 4968850231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330147154 + ... + 330147193.

It is an arithmetic number, because the mean of its divisors is an integer number (2311030218).

Almost surely, 2^13205886940 is an apocalyptic number.

13205886940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13205886940 is an abundant number, since it is smaller than the sum of its proper divisors (14526475676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13205886940 is a wasteful number, since it uses less digits than its factorization.

13205886940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660294356 (or 660294354 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 13205886940 in words is "thirteen billion, two hundred five million, eight hundred eighty-six thousand, nine hundred forty".