215345261322 has 48 divisors (see below), whose sum is σ = 469052064000. Its totient is φ = 71402319072.

The previous prime is 215345261303. The next prime is 215345261357. The reversal of 215345261322 is 223162543512.

215345261322 is a `hidden beast` number, since 2 + 1 + 5 + 34 + 5 + 2 + 613 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3926304 + ... + 3980772.

It is an arithmetic number, because the mean of its divisors is an integer number (9771918000).

Almost surely, 2^215345261322 is an apocalyptic number.

215345261322 is an abundant number, since it is smaller than the sum of its proper divisors (253706802678).

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

215345261322 is a wasteful number, since it uses less digits than its factorization.

215345261322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55635 (or 55632 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The spelling of 215345261322 in words is "two hundred fifteen billion, three hundred forty-five million, two hundred sixty-one thousand, three hundred twenty-two".