20081773433 has 4 divisors (see below), whose sum is σ = 20729572608. Its totient is φ = 19433974260.

The previous prime is 20081773399. The next prime is 20081773489. The reversal of 20081773433 is 33437718002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20081773433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20081770433) 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, 323899541 + ... + 323899602.

It is an arithmetic number, because the mean of its divisors is an integer number (5182393152).

Almost surely, 2^20081773433 is an apocalyptic number.

It is an amenable number.

20081773433 is a deficient number, since it is larger than the sum of its proper divisors (647799175).

20081773433 is an equidigital number, since it uses as much as digits as its factorization.

20081773433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647799174.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 20081773433 in words is "twenty billion, eighty-one million, seven hundred seventy-three thousand, four hundred thirty-three".