215715611215 has 48 divisors (see below), whose sum is σ = 281866525920. Its totient is φ = 158411635200.

The previous prime is 215715611207. The next prime is 215715611233. The reversal of 215715611215 is 512116517512.

It is not a de Polignac number, because 215715611215 - 2³ = 215715611207 is a prime.

It is a super-2 number, since 2×215715611215² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205247440 + ... + 205248490.

It is an arithmetic number, because the mean of its divisors is an integer number (5872219290).

Almost surely, 2^215715611215 is an apocalyptic number.

215715611215 is a deficient number, since it is larger than the sum of its proper divisors (66150914705).

215715611215 is a wasteful number, since it uses less digits than its factorization.

215715611215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2191 counting only the distinct ones).

The product of its digits is 21000, while the sum is 37.

The spelling of 215715611215 in words is "two hundred fifteen billion, seven hundred fifteen million, six hundred eleven thousand, two hundred fifteen".