215700506055 has 48 divisors (see below), whose sum is σ = 374842930176. Its totient is φ = 114744611520.

The previous prime is 215700506051. The next prime is 215700506089. The reversal of 215700506055 is 550605007512.

It is a happy number.

215700506055 is a `hidden beast` number, since 21 + 570 + 0 + 5 + 0 + 60 + 5 + 5 = 666.

It is not a de Polignac number, because 215700506055 - 2² = 215700506051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215700506051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40672534 + ... + 40677836.

It is an arithmetic number, because the mean of its divisors is an integer number (7809227712).

Almost surely, 2^215700506055 is an apocalyptic number.

215700506055 is a deficient number, since it is larger than the sum of its proper divisors (159142424121).

215700506055 is a wasteful number, since it uses less digits than its factorization.

215700506055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7468 (or 7465 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The spelling of 215700506055 in words is "two hundred fifteen billion, seven hundred million, five hundred six thousand, fifty-five".