20045799533 has 2 divisors, whose sum is σ = 20045799534. Its totient is φ = 20045799532.

The previous prime is 20045799497. The next prime is 20045799551. The reversal of 20045799533 is 33599754002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18174544969 + 1871254564 = 134813^2 + 43258^2 .

It is a cyclic number.

It is not a de Polignac number, because 20045799533 - 2¹⁶ = 20045733997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20045799593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022899766 + 10022899767.

It is an arithmetic number, because the mean of its divisors is an integer number (10022899767).

Almost surely, 2^20045799533 is an apocalyptic number.

It is an amenable number.

20045799533 is a deficient number, since it is larger than the sum of its proper divisors (1).

20045799533 is an equidigital number, since it uses as much as digits as its factorization.

20045799533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600, while the sum is 47.

The spelling of 20045799533 in words is "twenty billion, forty-five million, seven hundred ninety-nine thousand, five hundred thirty-three".