13691500880 has 40 divisors (see below), whose sum is σ = 32930425800. Its totient is φ = 5287751168.

The previous prime is 13691500873. The next prime is 13691500913. The reversal of 13691500880 is 8800519631.

It can be written as a sum of positive squares in 4 ways, for example, as 42719296 + 13648781584 = 6536^2 + 116828^2 .

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

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, 2948435 + ... + 2953074.

It is an arithmetic number, because the mean of its divisors is an integer number (823260645).

Almost surely, 2^13691500880 is an apocalyptic number.

13691500880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13691500880 is an abundant number, since it is smaller than the sum of its proper divisors (19238924920).

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

13691500880 is a wasteful number, since it uses less digits than its factorization.

13691500880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901551 (or 5901545 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 13691500880 in words is "thirteen billion, six hundred ninety-one million, five hundred thousand, eight hundred eighty".