10515500000 has 84 divisors (see below), whose sum is σ = 25878887496. Its totient is φ = 4206000000.

The previous prime is 10515499979. The next prime is 10515500029. The reversal of 10515500000 is 551501.

10515500000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10515500000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 489485 + ... + 510515.

It is an arithmetic number, because the mean of its divisors is an integer number (308081994).

Almost surely, 2^10515500000 is an apocalyptic number.

10515500000 is a gapful number since it is divisible by the number (10) 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 10515500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12939443748).

10515500000 is an abundant number, since it is smaller than the sum of its proper divisors (15363387496).

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

10515500000 is an frugal number, since it uses more digits than its factorization.

10515500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21071 (or 21038 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 17.

The spelling of 10515500000 in words is "ten billion, five hundred fifteen million, five hundred thousand".