33040020173 has 2 divisors, whose sum is σ = 33040020174. Its totient is φ = 33040020172.

The previous prime is 33040020161. The next prime is 33040020229. The reversal of 33040020173 is 37102004033.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32774395369 + 265624804 = 181037^2 + 16298^2 .

It is a cyclic number.

It is not a de Polignac number, because 33040020173 - 2⁴ = 33040020157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33040020133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16520010086 + 16520010087.

It is an arithmetic number, because the mean of its divisors is an integer number (16520010087).

Almost surely, 2^33040020173 is an apocalyptic number.

It is an amenable number.

33040020173 is a deficient number, since it is larger than the sum of its proper divisors (1).

33040020173 is an equidigital number, since it uses as much as digits as its factorization.

33040020173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The spelling of 33040020173 in words is "thirty-three billion, forty million, twenty thousand, one hundred seventy-three".