13136511320 has 64 divisors (see below), whose sum is σ = 31353907680. Its totient is φ = 4936329216.

The previous prime is 13136511313. The next prime is 13136511329. The reversal of 13136511320 is 2311563131.

It is a self number, because there is not a number n which added to its sum of digits gives 13136511320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13136511329) 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, 354302 + ... + 389618.

Almost surely, 2^13136511320 is an apocalyptic number.

13136511320 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 13136511320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15676953840).

13136511320 is an abundant number, since it is smaller than the sum of its proper divisors (18217396360).

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

13136511320 is a wasteful number, since it uses less digits than its factorization.

13136511320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35892 (or 35888 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The spelling of 13136511320 in words is "thirteen billion, one hundred thirty-six million, five hundred eleven thousand, three hundred twenty".