9999100512 has 96 divisors (see below), whose sum is σ = 30699043200. Its totient is φ = 3157605504.

The previous prime is 9999100453. The next prime is 9999100543. The reversal of 9999100512 is 2150019999.

9999100512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×9999100512² (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 15 ways as a sum of consecutive naturals, for example, 288138 + ... + 320969.

It is an arithmetic number, because the mean of its divisors is an integer number (319781700).

Almost surely, 2^9999100512 is an apocalyptic number.

It is an amenable number.

9999100512 is an abundant number, since it is smaller than the sum of its proper divisors (20699942688).

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

9999100512 is a wasteful number, since it uses less digits than its factorization.

9999100512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609145 (or 609131 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 45.

The square root of 9999100512 is about 99995.5024588606. The cubic root of 9999100512 is about 2154.3700918233.

It can be divided in two parts, 999 and 9100512, that added together give a triangular number (9101511 = T₄₂₆₆).

The spelling of 9999100512 in words is "nine billion, nine hundred ninety-nine million, one hundred thousand, five hundred twelve".