13691379400 has 96 divisors (see below), whose sum is σ = 33276441600. Its totient is φ = 5232614400.

The previous prime is 13691379391. The next prime is 13691379413. The reversal of 13691379400 is 497319631.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475824 + ... + 503776.

It is an arithmetic number, because the mean of its divisors is an integer number (346629600).

Almost surely, 2^13691379400 is an apocalyptic number.

13691379400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13691379400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16638220800).

13691379400 is an abundant number, since it is smaller than the sum of its proper divisors (19585062200).

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

13691379400 is a wasteful number, since it uses less digits than its factorization.

13691379400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28079 (or 28070 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 13691379400 in words is "thirteen billion, six hundred ninety-one million, three hundred seventy-nine thousand, four hundred".