215555520606115 has 64 divisors (see below), whose sum is σ = 265463308800000. Its totient is φ = 167964859865088.

The previous prime is 215555520606113. The next prime is 215555520606121. The reversal of 215555520606115 is 511606025555512.

It is a cyclic number.

It is not a de Polignac number, because 215555520606115 - 2¹ = 215555520606113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215555520606113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82619975931 + ... + 82619978539.

It is an arithmetic number, because the mean of its divisors is an integer number (4147864200000).

Almost surely, 2^{215555520606115} is an apocalyptic number.

215555520606115 is a deficient number, since it is larger than the sum of its proper divisors (49907788193885).

215555520606115 is a wasteful number, since it uses less digits than its factorization.

215555520606115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764.

The product of its (nonzero) digits is 2250000, while the sum is 49.

The spelling of 215555520606115 in words is "two hundred fifteen trillion, five hundred fifty-five billion, five hundred twenty million, six hundred six thousand, one hundred fifteen".