215190437473830 has 384 divisors, whose sum is σ = 645646324571136. Its totient is φ = 44940310272000.

The previous prime is 215190437473813. The next prime is 215190437473853. The reversal of 215190437473830 is 38374734091512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17158947360 + ... + 17158959900.

It is an arithmetic number, because the mean of its divisors is an integer number (1681370636904).

Almost surely, 2^{215190437473830} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215190437473830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322823162285568).

215190437473830 is an abundant number, since it is smaller than the sum of its proper divisors (430455887097306).

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

215190437473830 is a wasteful number, since it uses less digits than its factorization.

215190437473830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17472 (or 17459 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 215190437473830 in words is "two hundred fifteen trillion, one hundred ninety billion, four hundred thirty-seven million, four hundred seventy-three thousand, eight hundred thirty".