20872533299 has 4 divisors (see below), whose sum is σ = 21266354736. Its totient is φ = 20478711864.

The previous prime is 20872533287. The next prime is 20872533301. The reversal of 20872533299 is 99233527802.

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 20872533299 - 2¹² = 20872529203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20872533259) 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, 196910639 + ... + 196910744.

It is an arithmetic number, because the mean of its divisors is an integer number (5316588684).

Almost surely, 2^20872533299 is an apocalyptic number.

20872533299 is a deficient number, since it is larger than the sum of its proper divisors (393821437).

20872533299 is an equidigital number, since it uses as much as digits as its factorization.

20872533299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393821436.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 20872533299 in words is "twenty billion, eight hundred seventy-two million, five hundred thirty-three thousand, two hundred ninety-nine".