215412833266256 has 40 divisors (see below), whose sum is σ = 423694054958760. Its totient is φ = 106081849769984.

The previous prime is 215412833266243. The next prime is 215412833266307. The reversal of 215412833266256 is 652662338214512.

It can be written as a sum of positive squares in 4 ways, for example, as 69498899560000 + 145913933706256 = 8336600^2 + 12079484^2 .

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, 293939591 + ... + 294671526.

It is an arithmetic number, because the mean of its divisors is an integer number (10592351373969).

Almost surely, 2^{215412833266256} is an apocalyptic number.

It is an amenable number.

215412833266256 is a deficient number, since it is larger than the sum of its proper divisors (208281221692504).

215412833266256 is a wasteful number, since it uses less digits than its factorization.

215412833266256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588611471 (or 588611465 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 56.

The spelling of 215412833266256 in words is "two hundred fifteen trillion, four hundred twelve billion, eight hundred thirty-three million, two hundred sixty-six thousand, two hundred fifty-six".