73783330091 has 2 divisors, whose sum is σ = 73783330092. Its totient is φ = 73783330090.

The previous prime is 73783330087. The next prime is 73783330139. The reversal of 73783330091 is 19003338737.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73783330091 - 2² = 73783330087 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (73783330891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36891665045 + 36891665046.

It is an arithmetic number, because the mean of its divisors is an integer number (36891665046).

Almost surely, 2^73783330091 is an apocalyptic number.

73783330091 is a deficient number, since it is larger than the sum of its proper divisors (1).

73783330091 is an equidigital number, since it uses as much as digits as its factorization.

73783330091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 44.

The spelling of 73783330091 in words is "seventy-three billion, seven hundred eighty-three million, three hundred thirty thousand, ninety-one".