215515817119 has 6 divisors (see below), whose sum is σ = 228938947904. Its totient is φ = 202838415840.

The previous prime is 215515817093. The next prime is 215515817149. The reversal of 215515817119 is 911718515512.

It is not a de Polignac number, because 215515817119 - 2⁵ = 215515817087 is a prime.

It is a super-2 number, since 2×215515817119² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215515817149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 372864447 + ... + 372865024.

Almost surely, 2^215515817119 is an apocalyptic number.

215515817119 is a deficient number, since it is larger than the sum of its proper divisors (13423130785).

215515817119 is an equidigital number, since it uses as much as digits as its factorization.

215515817119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745729505 (or 745729488 counting only the distinct ones).

The product of its digits is 126000, while the sum is 46.

The spelling of 215515817119 in words is "two hundred fifteen billion, five hundred fifteen million, eight hundred seventeen thousand, one hundred nineteen".