213513530455320 has 128 divisors (see below), whose sum is σ = 640851021388800. Its totient is φ = 56909352439296.

The previous prime is 213513530455319. The next prime is 213513530455399. The reversal of 213513530455320 is 23554035315312.

It is a super-2 number, since 2×213513530455320² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3515926797 + ... + 3515987523.

It is an arithmetic number, because the mean of its divisors is an integer number (5006648604600).

Almost surely, 2^{213513530455320} is an apocalyptic number.

213513530455320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213513530455320 is an abundant number, since it is smaller than the sum of its proper divisors (427337490933480).

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

213513530455320 is a wasteful number, since it uses less digits than its factorization.

213513530455320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74457 (or 74453 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 42.

The spelling of 213513530455320 in words is "two hundred thirteen trillion, five hundred thirteen billion, five hundred thirty million, four hundred fifty-five thousand, three hundred twenty".