13400820880 has 40 divisors (see below), whose sum is σ = 31227322752. Its totient is φ = 5348214144.

The previous prime is 13400820847. The next prime is 13400820883. The reversal of 13400820880 is 8802800431.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (13400820883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153624 + ... + 224503.

Almost surely, 2^13400820880 is an apocalyptic number.

13400820880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13400820880 is an abundant number, since it is smaller than the sum of its proper divisors (17826501872).

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

13400820880 is a wasteful number, since it uses less digits than its factorization.

13400820880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378583 (or 378577 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 13400820880 in words is "thirteen billion, four hundred million, eight hundred twenty thousand, eight hundred eighty".