13113491520 has 112 divisors (see below), whose sum is σ = 41657869440. Its totient is φ = 3495038976.

The previous prime is 13113491519. The next prime is 13113491543. The reversal of 13113491520 is 2519431131.

It is a super-2 number, since 2×13113491520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3524221 + ... + 3527939.

Almost surely, 2^13113491520 is an apocalyptic number.

13113491520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13113491520 is an abundant number, since it is smaller than the sum of its proper divisors (28544377920).

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

13113491520 is a wasteful number, since it uses less digits than its factorization.

13113491520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7412 (or 7402 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 13113491520 in words is "thirteen billion, one hundred thirteen million, four hundred ninety-one thousand, five hundred twenty".