433873795021 has 2 divisors, whose sum is σ = 433873795022. Its totient is φ = 433873795020.

The previous prime is 433873795009. The next prime is 433873795037. The reversal of 433873795021 is 120597378334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336934972521 + 96938822500 = 580461^2 + 311350^2 .

It is a cyclic number.

It is not a de Polignac number, because 433873795021 - 2²³ = 433865406413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 433873795021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (433873793021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216936897510 + 216936897511.

It is an arithmetic number, because the mean of its divisors is an integer number (216936897511).

Almost surely, 2^433873795021 is an apocalyptic number.

It is an amenable number.

433873795021 is a deficient number, since it is larger than the sum of its proper divisors (1).

433873795021 is an equidigital number, since it uses as much as digits as its factorization.

433873795021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 433873795021 in words is "four hundred thirty-three billion, eight hundred seventy-three million, seven hundred ninety-five thousand, twenty-one".