215201055563260 has 96 divisors (see below), whose sum is σ = 487943090873280. Its totient is φ = 79253728376832.

The previous prime is 215201055563237. The next prime is 215201055563279. The reversal of 215201055563260 is 62365550102512.

It is a super-2 number, since 2×215201055563260² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202488136 + ... + 203548144.

It is an arithmetic number, because the mean of its divisors is an integer number (5082740529930).

Almost surely, 2^{215201055563260} is an apocalyptic number.

215201055563260 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 215201055563260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243971545436640).

215201055563260 is an abundant number, since it is smaller than the sum of its proper divisors (272742035310020).

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

215201055563260 is a wasteful number, since it uses less digits than its factorization.

215201055563260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062047 (or 1062045 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 215201055563260 in words is "two hundred fifteen trillion, two hundred one billion, fifty-five million, five hundred sixty-three thousand, two hundred sixty".