815158950215 has 12 divisors (see below), whose sum is σ = 1002630971352. Its totient is φ = 636221613120.

The previous prime is 815158950191. The next prime is 815158950241. The reversal of 815158950215 is 512059851518.

It is not a de Polignac number, because 815158950215 - 2²² = 815154755911 is a prime.

It is a super-2 number, since 2×815158950215² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48484097 + ... + 48500906.

It is an arithmetic number, because the mean of its divisors is an integer number (83552580946).

Almost surely, 2^815158950215 is an apocalyptic number.

815158950215 is a deficient number, since it is larger than the sum of its proper divisors (187472021137).

815158950215 is an equidigital number, since it uses as much as digits as its factorization.

815158950215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96985090 (or 96985049 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 50.

The spelling of 815158950215 in words is "eight hundred fifteen billion, one hundred fifty-eight million, nine hundred fifty thousand, two hundred fifteen".