13113556320 has 96 divisors (see below), whose sum is σ = 41461670880. Its totient is φ = 3483914240.

The previous prime is 13113556319. The next prime is 13113556321. The reversal of 13113556320 is 2365531131.

It is an interprime number because it is at equal distance from previous prime (13113556319) and next prime (13113556321).

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113556321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78340 + ... + 179900.

It is an arithmetic number, because the mean of its divisors is an integer number (431892405).

Almost surely, 2^13113556320 is an apocalyptic number.

13113556320 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 13113556320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20730835440).

13113556320 is an abundant number, since it is smaller than the sum of its proper divisors (28348114560).

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

13113556320 is a wasteful number, since it uses less digits than its factorization.

13113556320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101848 (or 101840 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The spelling of 13113556320 in words is "thirteen billion, one hundred thirteen million, five hundred fifty-six thousand, three hundred twenty".