20445402833 has 2 divisors, whose sum is σ = 20445402834. Its totient is φ = 20445402832.

The previous prime is 20445402823. The next prime is 20445402847. The reversal of 20445402833 is 33820454402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16901820049 + 3543582784 = 130007^2 + 59528^2 .

It is a cyclic number.

It is not a de Polignac number, because 20445402833 - 2¹² = 20445398737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20445402793 and 20445402802.

It is not a weakly prime, because it can be changed into another prime (20445402823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222701416 + 10222701417.

It is an arithmetic number, because the mean of its divisors is an integer number (10222701417).

Almost surely, 2^20445402833 is an apocalyptic number.

It is an amenable number.

20445402833 is a deficient number, since it is larger than the sum of its proper divisors (1).

20445402833 is an equidigital number, since it uses as much as digits as its factorization.

20445402833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 20445402833 in words is "twenty billion, four hundred forty-five million, four hundred two thousand, eight hundred thirty-three".