33645412039691 has 2 divisors, whose sum is σ = 33645412039692. Its totient is φ = 33645412039690.

The previous prime is 33645412039667. The next prime is 33645412039793. The reversal of 33645412039691 is 19693021454633.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33645412039691 - 2⁶ = 33645412039627 is a prime.

It is a super-3 number, since 3×33645412039691³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (33645412039661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16822706019845 + 16822706019846.

It is an arithmetic number, because the mean of its divisors is an integer number (16822706019846).

Almost surely, 2^{33645412039691} is an apocalyptic number.

33645412039691 is a deficient number, since it is larger than the sum of its proper divisors (1).

33645412039691 is an equidigital number, since it uses as much as digits as its factorization.

33645412039691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 56.

The spelling of 33645412039691 in words is "thirty-three trillion, six hundred forty-five billion, four hundred twelve million, thirty-nine thousand, six hundred ninety-one".