33668680819 has 2 divisors, whose sum is σ = 33668680820. Its totient is φ = 33668680818.

The previous prime is 33668680777. The next prime is 33668680823. The reversal of 33668680819 is 91808686633.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33668680819 - 2¹³ = 33668672627 is a prime.

It is a super-2 number, since 2×33668680819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33668681819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16834340409 + 16834340410.

It is an arithmetic number, because the mean of its divisors is an integer number (16834340410).

Almost surely, 2^33668680819 is an apocalyptic number.

33668680819 is a deficient number, since it is larger than the sum of its proper divisors (1).

33668680819 is an equidigital number, since it uses as much as digits as its factorization.

33668680819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 33668680819 in words is "thirty-three billion, six hundred sixty-eight million, six hundred eighty thousand, eight hundred nineteen".