13013120020 has 12 divisors (see below), whose sum is σ = 27327552084. Its totient is φ = 5205248000.

The previous prime is 13013120017. The next prime is 13013120041. The reversal of 13013120020 is 2002131031.

It can be written as a sum of positive squares in 2 ways, for example, as 5097103236 + 7916016784 = 71394^2 + 88972^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325327981 + ... + 325328020.

It is an arithmetic number, because the mean of its divisors is an integer number (2277296007).

Almost surely, 2^13013120020 is an apocalyptic number.

13013120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13013120020 is an abundant number, since it is smaller than the sum of its proper divisors (14314432064).

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

13013120020 is a wasteful number, since it uses less digits than its factorization.

13013120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650656010 (or 650656008 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13013120020 its reverse (2002131031), we get a palindrome (15015251051).

The spelling of 13013120020 in words is "thirteen billion, thirteen million, one hundred twenty thousand, twenty".