10515017920 has 112 divisors (see below), whose sum is σ = 27349191936. Its totient is φ = 3818880000.

The previous prime is 10515017899. The next prime is 10515017921. The reversal of 10515017920 is 2971051501.

It is a super-2 number, since 2×10515017920² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10515017921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4120645 + ... + 4123195.

Almost surely, 2^10515017920 is an apocalyptic number.

10515017920 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 10515017920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13674595968).

10515017920 is an abundant number, since it is smaller than the sum of its proper divisors (16834174016).

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

10515017920 is a wasteful number, since it uses less digits than its factorization.

10515017920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750 (or 3740 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 31.

The spelling of 10515017920 in words is "ten billion, five hundred fifteen million, seventeen thousand, nine hundred twenty".