215542252340000 has 480 divisors, whose sum is σ = 587347488327600. Its totient is φ = 77466583040000.

The previous prime is 215542252339987. The next prime is 215542252340071. The reversal of 215542252340000 is 43252245512.

It is a happy number.

It can be written as a sum of positive squares in 40 ways, for example, as 181967041914256 + 33575210425744 = 13489516^2 + 5794412^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 877417190 + ... + 877662810.

Almost surely, 2^{215542252340000} is an apocalyptic number.

215542252340000 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 215542252340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293673744163800).

215542252340000 is an abundant number, since it is smaller than the sum of its proper divisors (371805235987600).

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

215542252340000 is a wasteful number, since it uses less digits than its factorization.

215542252340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245786 (or 245763 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 215542252340000 in words is "two hundred fifteen trillion, five hundred forty-two billion, two hundred fifty-two million, three hundred forty thousand".