215832238470 has 32 divisors (see below), whose sum is σ = 575552636640. Its totient is φ = 57555263520.

The previous prime is 215832238451. The next prime is 215832238471. The reversal of 215832238470 is 74832238512.

215832238470 is a `hidden beast` number, since 2 + 1 + 583 + 2 + 23 + 8 + 47 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215832238471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399689061 + ... + 399689600.

It is an arithmetic number, because the mean of its divisors is an integer number (17986019895).

Almost surely, 2^215832238470 is an apocalyptic number.

215832238470 is an abundant number, since it is smaller than the sum of its proper divisors (359720398170).

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

215832238470 is a wasteful number, since it uses less digits than its factorization.

215832238470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799378677 (or 799378671 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 215832238470 in words is "two hundred fifteen billion, eight hundred thirty-two million, two hundred thirty-eight thousand, four hundred seventy".