13321355380 has 48 divisors (see below), whose sum is σ = 29633461200. Its totient is φ = 5012891648.

The previous prime is 13321355353. The next prime is 13321355381. The reversal of 13321355380 is 8355312331.

It can be written as a sum of positive squares in 8 ways, for example, as 609694864 + 12711660516 = 24692^2 + 112746^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321355381) 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, 908346 + ... + 922894.

It is an arithmetic number, because the mean of its divisors is an integer number (617363775).

Almost surely, 2^13321355380 is an apocalyptic number.

13321355380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321355380 is an abundant number, since it is smaller than the sum of its proper divisors (16312105820).

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

13321355380 is a wasteful number, since it uses less digits than its factorization.

13321355380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17268 (or 17266 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 13321355380 in words is "thirteen billion, three hundred twenty-one million, three hundred fifty-five thousand, three hundred eighty".