33642086389 has 2 divisors, whose sum is σ = 33642086390. Its totient is φ = 33642086388.

The previous prime is 33642086381. The next prime is 33642086441. The reversal of 33642086389 is 98368024633.

It is an a-pointer prime, because the next prime (33642086441) can be obtained adding 33642086389 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33348238225 + 293848164 = 182615^2 + 17142^2 .

It is a cyclic number.

It is not a de Polignac number, because 33642086389 - 2³ = 33642086381 is a prime.

It is a super-2 number, since 2×33642086389² (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 (33642086381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16821043194 + 16821043195.

It is an arithmetic number, because the mean of its divisors is an integer number (16821043195).

Almost surely, 2^33642086389 is an apocalyptic number.

It is an amenable number.

33642086389 is a deficient number, since it is larger than the sum of its proper divisors (1).

33642086389 is an equidigital number, since it uses as much as digits as its factorization.

33642086389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 33642086389 in words is "thirty-three billion, six hundred forty-two million, eighty-six thousand, three hundred eighty-nine".