215542406050120 has 128 divisors (see below), whose sum is σ = 492387038438400. Its totient is φ = 84906512216064.

The previous prime is 215542406050093. The next prime is 215542406050157. The reversal of 215542406050120 is 21050604245512.

It is a self number, because there is not a number n which added to its sum of digits gives 215542406050120.

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, 2158979724 + ... + 2159079556.

It is an arithmetic number, because the mean of its divisors is an integer number (3846773737800).

Almost surely, 2^{215542406050120} is an apocalyptic number.

215542406050120 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 215542406050120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246193519219200).

215542406050120 is an abundant number, since it is smaller than the sum of its proper divisors (276844632388280).

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

215542406050120 is a wasteful number, since it uses less digits than its factorization.

215542406050120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102359 (or 102355 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 215542406050120 in words is "two hundred fifteen trillion, five hundred forty-two billion, four hundred six million, fifty thousand, one hundred twenty".