215353027660 has 96 divisors (see below), whose sum is σ = 474734131200. Its totient is φ = 81961566720.

The previous prime is 215353027639. The next prime is 215353027667. The reversal of 215353027660 is 66720353512.

It is not an unprimeable number, because it can be changed into a prime (215353027667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9866319 + ... + 9888121.

It is an arithmetic number, because the mean of its divisors is an integer number (4945147200).

Almost surely, 2^215353027660 is an apocalyptic number.

215353027660 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 215353027660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237367065600).

215353027660 is an abundant number, since it is smaller than the sum of its proper divisors (259381103540).

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

215353027660 is a wasteful number, since it uses less digits than its factorization.

215353027660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22111 (or 22109 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 215353027660 in words is "two hundred fifteen billion, three hundred fifty-three million, twenty-seven thousand, six hundred sixty".