33816302081 has 2 divisors, whose sum is σ = 33816302082. Its totient is φ = 33816302080.

The previous prime is 33816302077. The next prime is 33816302119. The reversal of 33816302081 is 18020361833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29961879025 + 3854423056 = 173095^2 + 62084^2 .

It is a cyclic number.

It is not a de Polignac number, because 33816302081 - 2² = 33816302077 is a prime.

It is a super-2 number, since 2×33816302081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33816302041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16908151040 + 16908151041.

It is an arithmetic number, because the mean of its divisors is an integer number (16908151041).

Almost surely, 2^33816302081 is an apocalyptic number.

It is an amenable number.

33816302081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33816302081 is an equidigital number, since it uses as much as digits as its factorization.

33816302081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 33816302081 in words is "thirty-three billion, eight hundred sixteen million, three hundred two thousand, eighty-one".