33909768697 has 4 divisors (see below), whose sum is σ = 38754021376. Its totient is φ = 29065516020.

The previous prime is 33909768691. The next prime is 33909768757. The reversal of 33909768697 is 79686790933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33909768697 - 2⁷ = 33909768569 is a prime.

It is a super-2 number, since 2×33909768697² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33909768691) 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 in 3 ways as a sum of consecutive naturals, for example, 2422126329 + ... + 2422126342.

It is an arithmetic number, because the mean of its divisors is an integer number (9688505344).

Almost surely, 2^33909768697 is an apocalyptic number.

It is an amenable number.

33909768697 is a deficient number, since it is larger than the sum of its proper divisors (4844252679).

33909768697 is an equidigital number, since it uses as much as digits as its factorization.

33909768697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844252678.

The product of its (nonzero) digits is 92588832, while the sum is 67.

The spelling of 33909768697 in words is "thirty-three billion, nine hundred nine million, seven hundred sixty-eight thousand, six hundred ninety-seven".