215122045652 has 12 divisors (see below), whose sum is σ = 376469525460. Its totient is φ = 107559324096.

The previous prime is 215122045627. The next prime is 215122045661. The reversal of 215122045652 is 256540221512.

It can be written as a sum of positive squares in 2 ways, for example, as 152508994576 + 62613051076 = 390524^2 + 250226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114593 + ... + 665864.

It is an arithmetic number, because the mean of its divisors is an integer number (31372460455).

Almost surely, 2^215122045652 is an apocalyptic number.

It is an amenable number.

215122045652 is a deficient number, since it is larger than the sum of its proper divisors (161347479808).

215122045652 is a wasteful number, since it uses less digits than its factorization.

215122045652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849370 (or 849368 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 215122045652 in words is "two hundred fifteen billion, one hundred twenty-two million, forty-five thousand, six hundred fifty-two".