33987332173 has 2 divisors, whose sum is σ = 33987332174. Its totient is φ = 33987332172.

The previous prime is 33987332167. The next prime is 33987332257. The reversal of 33987332173 is 37123378933.

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., 23188589284 + 10798742889 = 152278^2 + 103917^2 .

It is a cyclic number.

It is not a de Polignac number, because 33987332173 - 2⁹ = 33987331661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33987332573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16993666086 + 16993666087.

It is an arithmetic number, because the mean of its divisors is an integer number (16993666087).

Almost surely, 2^33987332173 is an apocalyptic number.

It is an amenable number.

33987332173 is a deficient number, since it is larger than the sum of its proper divisors (1).

33987332173 is an equidigital number, since it uses as much as digits as its factorization.

33987332173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 49.

The spelling of 33987332173 in words is "thirty-three billion, nine hundred eighty-seven million, three hundred thirty-two thousand, one hundred seventy-three".