13012012320 has 96 divisors (see below), whose sum is σ = 42401257920. Its totient is φ = 3350215680.

The previous prime is 13012012303. The next prime is 13012012373. The reversal of 13012012320 is 2321021031.

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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13012012320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453466 + ... + 481305.

It is an arithmetic number, because the mean of its divisors is an integer number (441679770).

Almost surely, 2^13012012320 is an apocalyptic number.

13012012320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012012320 is an abundant number, since it is smaller than the sum of its proper divisors (29389245600).

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

13012012320 is a wasteful number, since it uses less digits than its factorization.

13012012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934818 (or 934810 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13012012320 its reverse (2321021031), we get a palindrome (15333033351).

The spelling of 13012012320 in words is "thirteen billion, twelve million, twelve thousand, three hundred twenty".