33868799989 has 2 divisors, whose sum is σ = 33868799990. Its totient is φ = 33868799988.

The previous prime is 33868799971. The next prime is 33868800011. The reversal of 33868799989 is 98999786833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24079280625 + 9789519364 = 155175^2 + 98942^2 .

It is a cyclic number.

It is not a de Polignac number, because 33868799989 - 2¹⁵ = 33868767221 is a prime.

It is a super-2 number, since 2×33868799989² (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 (33868799089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16934399994 + 16934399995.

It is an arithmetic number, because the mean of its divisors is an integer number (16934399995).

Almost surely, 2^33868799989 is an apocalyptic number.

It is an amenable number.

33868799989 is a deficient number, since it is larger than the sum of its proper divisors (1).

33868799989 is an equidigital number, since it uses as much as digits as its factorization.

33868799989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1269789696, while the sum is 79.

The spelling of 33868799989 in words is "thirty-three billion, eight hundred sixty-eight million, seven hundred ninety-nine thousand, nine hundred eighty-nine".