20060644433 has 4 divisors (see below), whose sum is σ = 20068096308. Its totient is φ = 20053192560.

The previous prime is 20060644421. The next prime is 20060644447. The reversal of 20060644433 is 33444606002.

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 11678692624 + 8381951809 = 108068^2 + 91553^2 .

It is a cyclic number.

It is not a de Polignac number, because 20060644433 - 2¹⁶ = 20060578897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20060644433.

It is not an unprimeable number, because it can be changed into a prime (20060644463) 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, 3721898 + ... + 3727283.

It is an arithmetic number, because the mean of its divisors is an integer number (5017024077).

Almost surely, 2^20060644433 is an apocalyptic number.

It is an amenable number.

20060644433 is a deficient number, since it is larger than the sum of its proper divisors (7451875).

20060644433 is an equidigital number, since it uses as much as digits as its factorization.

20060644433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7451874.

The product of its (nonzero) digits is 41472, while the sum is 32.

The spelling of 20060644433 in words is "twenty billion, sixty million, six hundred forty-four thousand, four hundred thirty-three".