13136385680 has 120 divisors (see below), whose sum is σ = 35165409984. Its totient is φ = 4525344000.

The previous prime is 13136385667. The next prime is 13136385683. The reversal of 13136385680 is 8658363131.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (13136385683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297005 + ... + 338355.

Almost surely, 2^13136385680 is an apocalyptic number.

13136385680 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 13136385680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17582704992).

13136385680 is an abundant number, since it is smaller than the sum of its proper divisors (22029024304).

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

13136385680 is a wasteful number, since it uses less digits than its factorization.

13136385680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41413 (or 41388 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 13136385680 in words is "thirteen billion, one hundred thirty-six million, three hundred eighty-five thousand, six hundred eighty".