215530661056602 has 16 divisors (see below), whose sum is σ = 431641485408960. Its totient is φ = 71746859802912.

The previous prime is 215530661056483. The next prime is 215530661056657. The reversal of 215530661056602 is 206650166035512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24173465827 + ... + 24173474742.

It is an arithmetic number, because the mean of its divisors is an integer number (26977592838060).

Almost surely, 2^{215530661056602} is an apocalyptic number.

215530661056602 is an abundant number, since it is smaller than the sum of its proper divisors (216110824352358).

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

215530661056602 is a wasteful number, since it uses less digits than its factorization.

215530661056602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48346941317.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 215530661056602 in words is "two hundred fifteen trillion, five hundred thirty billion, six hundred sixty-one million, fifty-six thousand, six hundred two".