13115450880 has 320 divisors, whose sum is σ = 53244449280. Its totient is φ = 2997706752.

The previous prime is 13115450869. The next prime is 13115450897. The reversal of 13115450880 is 8805451131.

13115450880 is a `hidden beast` number, since 1 + 31 + 1 + 545 + 0 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470287 + ... + 497393.

It is an arithmetic number, because the mean of its divisors is an integer number (166388904).

Almost surely, 2^13115450880 is an apocalyptic number.

13115450880 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 13115450880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26622224640).

13115450880 is an abundant number, since it is smaller than the sum of its proper divisors (40128998400).

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

13115450880 is an equidigital number, since it uses as much as digits as its factorization.

13115450880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27146 (or 27124 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 13115450880 in words is "thirteen billion, one hundred fifteen million, four hundred fifty thousand, eight hundred eighty".