13015420660 has 144 divisors (see below), whose sum is σ = 33486505920. Its totient is φ = 4219776000.

The previous prime is 13015420631. The next prime is 13015420667. The reversal of 13015420660 is 6602451031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13015420667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 773335 + ... + 789985.

It is an arithmetic number, because the mean of its divisors is an integer number (232545180).

Almost surely, 2^13015420660 is an apocalyptic number.

13015420660 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 13015420660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16743252960).

13015420660 is an abundant number, since it is smaller than the sum of its proper divisors (20471085260).

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

13015420660 is a wasteful number, since it uses less digits than its factorization.

13015420660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16718 (or 16705 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 13015420660 its reverse (6602451031), we get a palindrome (19617871691).

The spelling of 13015420660 in words is "thirteen billion, fifteen million, four hundred twenty thousand, six hundred sixty".