73980617791 has 2 divisors, whose sum is σ = 73980617792. Its totient is φ = 73980617790.

The previous prime is 73980617779. The next prime is 73980617797. The reversal of 73980617791 is 19771608937.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73980617791 - 2¹¹ = 73980615743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73980617797) 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 as a sum of consecutive naturals, namely, 36990308895 + 36990308896.

It is an arithmetic number, because the mean of its divisors is an integer number (36990308896).

Almost surely, 2^73980617791 is an apocalyptic number.

73980617791 is a deficient number, since it is larger than the sum of its proper divisors (1).

73980617791 is an equidigital number, since it uses as much as digits as its factorization.

73980617791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000752, while the sum is 58.

The spelling of 73980617791 in words is "seventy-three billion, nine hundred eighty million, six hundred seventeen thousand, seven hundred ninety-one".