20303536673 has 4 divisors (see below), whose sum is σ = 23204041920. Its totient is φ = 17403031428.

The previous prime is 20303536663. The next prime is 20303536751. The reversal of 20303536673 is 37663530302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37663530302 = 2 ⋅18831765151.

It is a cyclic number.

It is not a de Polignac number, because 20303536673 - 2⁸ = 20303536417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20303536613) 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, 1450252613 + ... + 1450252626.

It is an arithmetic number, because the mean of its divisors is an integer number (5801010480).

Almost surely, 2^20303536673 is an apocalyptic number.

It is an amenable number.

20303536673 is a deficient number, since it is larger than the sum of its proper divisors (2900505247).

20303536673 is an equidigital number, since it uses as much as digits as its factorization.

20303536673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900505246.

The product of its (nonzero) digits is 204120, while the sum is 38.

The spelling of 20303536673 in words is "twenty billion, three hundred three million, five hundred thirty-six thousand, six hundred seventy-three".