33366143989 has 2 divisors, whose sum is σ = 33366143990. Its totient is φ = 33366143988.

The previous prime is 33366143971. The next prime is 33366144013. The reversal of 33366143989 is 98934166333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32957497764 + 408646225 = 181542^2 + 20215^2 .

It is a cyclic number.

It is not a de Polignac number, because 33366143989 - 2⁵ = 33366143957 is a prime.

It is a super-2 number, since 2×33366143989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33366143089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16683071994 + 16683071995.

It is an arithmetic number, because the mean of its divisors is an integer number (16683071995).

Almost surely, 2^33366143989 is an apocalyptic number.

It is an amenable number.

33366143989 is a deficient number, since it is larger than the sum of its proper divisors (1).

33366143989 is an equidigital number, since it uses as much as digits as its factorization.

33366143989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 55.

The spelling of 33366143989 in words is "thirty-three billion, three hundred sixty-six million, one hundred forty-three thousand, nine hundred eighty-nine".