215230032513 has 12 divisors (see below), whose sum is σ = 311277907668. Its totient is φ = 143306650080.

The previous prime is 215230032503. The next prime is 215230032541. The reversal of 215230032513 is 315230032512.

It is a happy number.

215230032513 is a `hidden beast` number, since 21 + 5 + 2 + 300 + 325 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 173936541249 + 41293491264 = 417057^2 + 203208^2 .

It is not a de Polignac number, because 215230032513 - 2⁴ = 215230032497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215230032503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14995618 + ... + 15009963.

It is an arithmetic number, because the mean of its divisors is an integer number (25939825639).

Almost surely, 2^215230032513 is an apocalyptic number.

It is an amenable number.

215230032513 is a deficient number, since it is larger than the sum of its proper divisors (96047875155).

215230032513 is a wasteful number, since it uses less digits than its factorization.

215230032513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30006384 (or 30006381 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Subtracting 215230032513 from its reverse (315230032512), we obtain a palindrome (99999999999).

The spelling of 215230032513 in words is "two hundred fifteen billion, two hundred thirty million, thirty-two thousand, five hundred thirteen".