2015112015 has 72 divisors (see below), whose sum is σ = 4084629120. Its totient is φ = 916320384.

The previous prime is 2015112007. The next prime is 2015112023. The reversal of 2015112015 is 5102115102.

It is an interprime number because it is at equal distance from previous prime (2015112007) and next prime (2015112023).

It is not a de Polignac number, because 2015112015 - 2³ = 2015112007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 432066 + ... + 436704.

It is an arithmetic number, because the mean of its divisors is an integer number (56730960).

Almost surely, 2^2015112015 is an apocalyptic number.

2015112015 is an abundant number, since it is smaller than the sum of its proper divisors (2069517105).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2015112015 is a wasteful number, since it uses less digits than its factorization.

2015112015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861 (or 4851 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 2015112015 is about 44889.9990532412. Note that the first 3 decimals coincide. The cubic root of 2015112015 is about 1263.0864150245.

Adding to 2015112015 its reverse (5102115102), we get a palindrome (7117227117).

The spelling of 2015112015 in words is "two billion, fifteen million, one hundred twelve thousand, fifteen".