9900990210023 has 4 divisors (see below), whose sum is σ = 10801080229128. Its totient is φ = 9000900190920.

The previous prime is 9900990210019. The next prime is 9900990210029. The reversal of 9900990210023 is 3200120990099.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9900990210023 - 2² = 9900990210019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900990210029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 450045009536 + ... + 450045009557.

It is an arithmetic number, because the mean of its divisors is an integer number (2700270057282).

Almost surely, 2^{9900990210023} is an apocalyptic number.

9900990210023 is a deficient number, since it is larger than the sum of its proper divisors (900090019105).

9900990210023 is a wasteful number, since it uses less digits than its factorization.

9900990210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900090019104.

The product of its (nonzero) digits is 78732, while the sum is 44.

The spelling of 9900990210023 in words is "nine trillion, nine hundred billion, nine hundred ninety million, two hundred ten thousand, twenty-three".