2015015500 has 96 divisors (see below), whose sum is σ = 4609253376. Its totient is φ = 768600000.

The previous prime is 2015015489. The next prime is 2015015521. The reversal of 2015015500 is 55105102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1099585 + ... + 1101415.

It is an arithmetic number, because the mean of its divisors is an integer number (48013056).

Almost surely, 2^2015015500 is an apocalyptic number.

2015015500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015015500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2304626688).

2015015500 is an abundant number, since it is smaller than the sum of its proper divisors (2594237876).

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

2015015500 is a wasteful number, since it uses less digits than its factorization.

2015015500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 2015015500 is about 44888.9240236386. The cubic root of 2015015500 is about 1263.0662492751.

The spelling of 2015015500 in words is "two billion, fifteen million, fifteen thousand, five hundred".