215651025032 has 16 divisors (see below), whose sum is σ = 406440730140. Its totient is φ = 107266830336.

The previous prime is 215651025019. The next prime is 215651025053. The reversal of 215651025032 is 230520156512.

It can be written as a sum of positive squares in 2 ways, for example, as 185342304196 + 30308720836 = 430514^2 + 174094^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215651025032.

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, 69833633 + ... + 69836720.

Almost surely, 2^215651025032 is an apocalyptic number.

It is an amenable number.

215651025032 is a deficient number, since it is larger than the sum of its proper divisors (190789705108).

215651025032 is a wasteful number, since it uses less digits than its factorization.

215651025032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139670552 (or 139670548 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 215651025032 in words is "two hundred fifteen billion, six hundred fifty-one million, twenty-five thousand, thirty-two".