215025081558120 has 1536 divisors, whose sum is σ = 766424135393280. Its totient is φ = 54164794245120.

The previous prime is 215025081558103. The next prime is 215025081558229. The reversal of 215025081558120 is 21855180520512.

215025081558120 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 2 + 5 + 0 + 81 + 558 + 12 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 686981091084 + ... + 686981091396.

It is an arithmetic number, because the mean of its divisors is an integer number (498974046480).

Almost surely, 2^{215025081558120} is an apocalyptic number.

215025081558120 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 215025081558120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383212067696640).

215025081558120 is an abundant number, since it is smaller than the sum of its proper divisors (551399053835160).

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

215025081558120 is a wasteful number, since it uses less digits than its factorization.

215025081558120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 45.

The spelling of 215025081558120 in words is "two hundred fifteen trillion, twenty-five billion, eighty-one million, five hundred fifty-eight thousand, one hundred twenty".