20001323299 has 4 divisors (see below), whose sum is σ = 20051704864. Its totient is φ = 19950941736.

The previous prime is 20001323263. The next prime is 20001323333. The reversal of 20001323299 is 99232310002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001323299 is a prime.

It is a super-2 number, since 2×20001323299² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001323299.

It is not an unprimeable number, because it can be changed into a prime (20001323249) 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, 25190187 + ... + 25190980.

It is an arithmetic number, because the mean of its divisors is an integer number (5012926216).

Almost surely, 2^20001323299 is an apocalyptic number.

20001323299 is a deficient number, since it is larger than the sum of its proper divisors (50381565).

20001323299 is an equidigital number, since it uses as much as digits as its factorization.

20001323299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50381564.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 20001323299 in words is "twenty billion, one million, three hundred twenty-three thousand, two hundred ninety-nine".