33680867081 has 4 divisors (see below), whose sum is σ = 33681504000. Its totient is φ = 33680230164.

The previous prime is 33680867063. The next prime is 33680867117. The reversal of 33680867081 is 18076808633.

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 33680867081 - 2¹⁰ = 33680866057 is a prime.

It is a super-2 number, since 2×33680867081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33680867281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231161 + ... + 347558.

It is an arithmetic number, because the mean of its divisors is an integer number (8420376000).

Almost surely, 2^33680867081 is an apocalyptic number.

It is an amenable number.

33680867081 is a deficient number, since it is larger than the sum of its proper divisors (636919).

33680867081 is an equidigital number, since it uses as much as digits as its factorization.

33680867081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636918.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 33680867081 in words is "thirty-three billion, six hundred eighty million, eight hundred sixty-seven thousand, eighty-one".