13155205320 has 96 divisors (see below), whose sum is σ = 43169630400. Its totient is φ = 3473986176.

The previous prime is 13155205309. The next prime is 13155205337. The reversal of 13155205320 is 2350255131.

It is a happy number.

13155205320 is a `hidden beast` number, since 1 + 315 + 5 + 20 + 5 + 320 = 666.

It is a super-2 number, since 2×13155205320² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140310 + ... + 214469.

It is an arithmetic number, because the mean of its divisors is an integer number (449683650).

Almost surely, 2^13155205320 is an apocalyptic number.

13155205320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13155205320 is an abundant number, since it is smaller than the sum of its proper divisors (30014425080).

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

13155205320 is a wasteful number, since it uses less digits than its factorization.

13155205320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354899 (or 354892 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 13155205320 in words is "thirteen billion, one hundred fifty-five million, two hundred five thousand, three hundred twenty".