13355123251220 has 48 divisors (see below), whose sum is σ = 28867903923600. Its totient is φ = 5186093359104.

The previous prime is 13355123251073. The next prime is 13355123251243. The reversal of 13355123251220 is 2215232155331.

It can be written as a sum of positive squares in 8 ways, for example, as 44971988356 + 13310151262864 = 212066^2 + 3648308^2 .

It is a congruent number.

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, 19765139 + ... + 20429658.

It is an arithmetic number, because the mean of its divisors is an integer number (601414665075).

Almost surely, 2^{13355123251220} is an apocalyptic number.

13355123251220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13355123251220 is an abundant number, since it is smaller than the sum of its proper divisors (15512780672380).

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

13355123251220 is a wasteful number, since it uses less digits than its factorization.

13355123251220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40195292 (or 40195290 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 13355123251220 in words is "thirteen trillion, three hundred fifty-five billion, one hundred twenty-three million, two hundred fifty-one thousand, two hundred twenty".