2015205012 has 72 divisors (see below), whose sum is σ = 5311488000. Its totient is φ = 643422528.

The previous prime is 2015204987. The next prime is 2015205043. The reversal of 2015205012 is 2105025102.

It is a super-2 number, since 2×2015205012² = 8122102480779840288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124989 + ... + 140187.

Almost surely, 2^2015205012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015205012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655744000).

2015205012 is an abundant number, since it is smaller than the sum of its proper divisors (3296282988).

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

2015205012 is a wasteful number, since it uses less digits than its factorization.

2015205012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15365 (or 15360 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2015205012 is about 44891.0348733464. The cubic root of 2015205012 is about 1263.1058451173.

The spelling of 2015205012 in words is "two billion, fifteen million, two hundred five thousand, twelve".