20836960433 has 4 divisors (see below), whose sum is σ = 21555476340. Its totient is φ = 20118444528.

The previous prime is 20836960421. The next prime is 20836960457. The reversal of 20836960433 is 33406963802.

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 17648325409 + 3188635024 = 132847^2 + 56468^2 .

It is a cyclic number.

It is not a de Polignac number, because 20836960433 - 2¹⁴ = 20836944049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20836960483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359257910 + ... + 359257967.

It is an arithmetic number, because the mean of its divisors is an integer number (5388869085).

Almost surely, 2^20836960433 is an apocalyptic number.

It is an amenable number.

20836960433 is a deficient number, since it is larger than the sum of its proper divisors (718515907).

20836960433 is an equidigital number, since it uses as much as digits as its factorization.

20836960433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718515906.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 20836960433 in words is "twenty billion, eight hundred thirty-six million, nine hundred sixty thousand, four hundred thirty-three".