215656051206 has 16 divisors (see below), whose sum is σ = 432285724224. Its totient is φ = 71723080104.

The previous prime is 215656051183. The next prime is 215656051213. The reversal of 215656051206 is 602150656512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40564696 + ... + 40570011.

It is an arithmetic number, because the mean of its divisors is an integer number (27017857764).

Almost surely, 2^215656051206 is an apocalyptic number.

215656051206 is an abundant number, since it is smaller than the sum of its proper divisors (216629673018).

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

215656051206 is a wasteful number, since it uses less digits than its factorization.

215656051206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81135155.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 215656051206 in words is "two hundred fifteen billion, six hundred fifty-six million, fifty-one thousand, two hundred six".