20003312999 has 4 divisors (see below), whose sum is σ = 20019485064. Its totient is φ = 19987140936.

The previous prime is 20003312983. The next prime is 20003313047. The reversal of 20003312999 is 99921330002.

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

It is a cyclic number.

It is not a de Polignac number, because 20003312999 - 2⁴ = 20003312983 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 (20003012999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8084177 + ... + 8086650.

It is an arithmetic number, because the mean of its divisors is an integer number (5004871266).

Almost surely, 2^20003312999 is an apocalyptic number.

20003312999 is a deficient number, since it is larger than the sum of its proper divisors (16172065).

20003312999 is a wasteful number, since it uses less digits than its factorization.

20003312999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16172064.

The product of its (nonzero) digits is 26244, while the sum is 38.

The spelling of 20003312999 in words is "twenty billion, three million, three hundred twelve thousand, nine hundred ninety-nine".