13115394288 has 120 divisors (see below), whose sum is σ = 38106113136. Its totient is φ = 4367001600.

The previous prime is 13115394269. The next prime is 13115394301. The reversal of 13115394288 is 88249351131.

13115394288 is a `hidden beast` number, since 1 + 31 + 1 + 539 + 4 + 2 + 88 = 666.

It is a congruent number.

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, 6301408 + ... + 6303488.

Almost surely, 2^13115394288 is an apocalyptic number.

13115394288 is a gapful number since it is divisible by the number (18) 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 13115394288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19053056568).

13115394288 is an abundant number, since it is smaller than the sum of its proper divisors (24990718848).

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

13115394288 is a wasteful number, since it uses less digits than its factorization.

13115394288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725 (or 3707 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 13115394288 in words is "thirteen billion, one hundred fifteen million, three hundred ninety-four thousand, two hundred eighty-eight".