13020321030320 has 40 divisors (see below), whose sum is σ = 30272401650624. Its totient is φ = 5208101701632.

The previous prime is 13020321030263. The next prime is 13020321030391. The reversal of 13020321030320 is 2303012302031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13020321030292 and 13020321030301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24573632 + ... + 25097888.

Almost surely, 2^{13020321030320} is an apocalyptic number.

13020321030320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13020321030320 is an abundant number, since it is smaller than the sum of its proper divisors (17252080620304).

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

13020321030320 is a wasteful number, since it uses less digits than its factorization.

13020321030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834717 (or 834711 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13020321030320 its reverse (2303012302031), we get a palindrome (15323333332351).

The spelling of 13020321030320 in words is "thirteen trillion, twenty billion, three hundred twenty-one million, thirty thousand, three hundred twenty".