215330523030420 has 192 divisors, whose sum is σ = 690380928953856. Its totient is φ = 49123947755520.

The previous prime is 215330523030401. The next prime is 215330523030433. The reversal of 215330523030420 is 24030325033512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 687508174 + ... + 687821306.

It is an arithmetic number, because the mean of its divisors is an integer number (3595734004968).

Almost surely, 2^{215330523030420} is an apocalyptic number.

215330523030420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215330523030420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345190464476928).

215330523030420 is an abundant number, since it is smaller than the sum of its proper divisors (475050405923436).

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

215330523030420 is a wasteful number, since it uses less digits than its factorization.

215330523030420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316290 (or 316288 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 215330523030420 its reverse (24030325033512), we get a palindrome (239360848063932).

The spelling of 215330523030420 in words is "two hundred fifteen trillion, three hundred thirty billion, five hundred twenty-three million, thirty thousand, four hundred twenty".