13391525880 has 320 divisors, whose sum is σ = 46011382560. Its totient is φ = 3507038208.

The previous prime is 13391525813. The next prime is 13391525893. The reversal of 13391525880 is 8852519331.

13391525880 is a `hidden beast` number, since 1 + 3 + 391 + 5 + 258 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57474244 + ... + 57474476.

Almost surely, 2^13391525880 is an apocalyptic number.

13391525880 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 13391525880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23005691280).

13391525880 is an abundant number, since it is smaller than the sum of its proper divisors (32619856680).

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

13391525880 is an frugal number, since it uses more digits than its factorization.

13391525880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 13391525880 in words is "thirteen billion, three hundred ninety-one million, five hundred twenty-five thousand, eight hundred eighty".