20265670433 has 4 divisors (see below), whose sum is σ = 20266040340. Its totient is φ = 20265300528.

The previous prime is 20265670391. The next prime is 20265670457. The reversal of 20265670433 is 33407656202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10561056289 + 9704614144 = 102767^2 + 98512^2 .

It is a cyclic number.

It is not a de Polignac number, because 20265670433 - 2²⁰ = 20264621857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20265670133) 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, 84638 + ... + 218391.

It is an arithmetic number, because the mean of its divisors is an integer number (5066510085).

Almost surely, 2^20265670433 is an apocalyptic number.

It is an amenable number.

20265670433 is a deficient number, since it is larger than the sum of its proper divisors (369907).

20265670433 is an equidigital number, since it uses as much as digits as its factorization.

20265670433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369906.

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 20265670433 in words is "twenty billion, two hundred sixty-five million, six hundred seventy thousand, four hundred thirty-three".