13020401320 has 64 divisors (see below), whose sum is σ = 32651812800. Its totient is φ = 4643804160.

The previous prime is 13020401309. The next prime is 13020401323. The reversal of 13020401320 is 2310402031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13020401294 and 13020401303.

It is not an unprimeable number, because it can be changed into a prime (13020401323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490966 + ... + 516805.

It is an arithmetic number, because the mean of its divisors is an integer number (510184575).

Almost surely, 2^13020401320 is an apocalyptic number.

13020401320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13020401320 is an abundant number, since it is smaller than the sum of its proper divisors (19631411480).

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

13020401320 is a wasteful number, since it uses less digits than its factorization.

13020401320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007818 (or 1007814 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 13020401320 its reverse (2310402031), we get a palindrome (15330803351).

The spelling of 13020401320 in words is "thirteen billion, twenty million, four hundred one thousand, three hundred twenty".