215832238513 has 8 divisors (see below), whose sum is σ = 216463786560. Its totient is φ = 215200859760.

The previous prime is 215832238471. The next prime is 215832238529. The reversal of 215832238513 is 315832238512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215832238513 - 2¹⁷ = 215832107441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215832238513.

It is not an unprimeable number, because it can be changed into a prime (215832238543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2786043 + ... + 2862463.

It is an arithmetic number, because the mean of its divisors is an integer number (27057973320).

Almost surely, 2^215832238513 is an apocalyptic number.

It is an amenable number.

215832238513 is a deficient number, since it is larger than the sum of its proper divisors (631548047).

215832238513 is an equidigital number, since it uses as much as digits as its factorization.

215832238513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84647.

The product of its digits is 345600, while the sum is 43.

Subtracting 215832238513 from its reverse (315832238512), we obtain a palindrome (99999999999).

The spelling of 215832238513 in words is "two hundred fifteen billion, eight hundred thirty-two million, two hundred thirty-eight thousand, five hundred thirteen".