9999913121023 has 8 divisors (see below), whose sum is σ = 11430929383040. Its totient is φ = 8569511170200.

The previous prime is 9999913121017. The next prime is 9999913121057. The reversal of 9999913121023 is 3201213199999.

9999913121023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9999913121023 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 (9999913121083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153542913 + ... + 153608026.

It is an arithmetic number, because the mean of its divisors is an integer number (1428866172880).

Almost surely, 2^{9999913121023} is an apocalyptic number.

9999913121023 is a deficient number, since it is larger than the sum of its proper divisors (1431016262017).

9999913121023 is a wasteful number, since it uses less digits than its factorization.

9999913121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307155597.

The product of its (nonzero) digits is 2125764, while the sum is 58.

The spelling of 9999913121023 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred thirteen million, one hundred twenty-one thousand, twenty-three".