10515521000 has 64 divisors (see below), whose sum is σ = 25178662080. Its totient is φ = 4108372800.

The previous prime is 10515520927. The next prime is 10515521039. The reversal of 10515521000 is 12551501.

It is a happy number.

10515521000 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 2×10515521000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 79274 + ... + 165273.

It is an arithmetic number, because the mean of its divisors is an integer number (393416595).

Almost surely, 2^10515521000 is an apocalyptic number.

10515521000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10515521000 is an abundant number, since it is smaller than the sum of its proper divisors (14663141080).

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

10515521000 is a wasteful number, since it uses less digits than its factorization.

10515521000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244611 (or 244597 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 20.

The spelling of 10515521000 in words is "ten billion, five hundred fifteen million, five hundred twenty-one thousand".