73108635989 has 2 divisors, whose sum is σ = 73108635990. Its totient is φ = 73108635988.

The previous prime is 73108635973. The next prime is 73108636001. The reversal of 73108635989 is 98953680137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48094683025 + 25013952964 = 219305^2 + 158158^2 .

It is a cyclic number.

It is not a de Polignac number, because 73108635989 - 2⁴ = 73108635973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73108635959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36554317994 + 36554317995.

It is an arithmetic number, because the mean of its divisors is an integer number (36554317995).

Almost surely, 2^73108635989 is an apocalyptic number.

It is an amenable number.

73108635989 is a deficient number, since it is larger than the sum of its proper divisors (1).

73108635989 is an equidigital number, since it uses as much as digits as its factorization.

73108635989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 73108635989 in words is "seventy-three billion, one hundred eight million, six hundred thirty-five thousand, nine hundred eighty-nine".