73738812673 has 2 divisors, whose sum is σ = 73738812674. Its totient is φ = 73738812672.

The previous prime is 73738812661. The next prime is 73738812677. The reversal of 73738812673 is 37621883737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62223805809 + 11515006864 = 249447^2 + 107308^2 .

It is an emirp because it is prime and its reverse (37621883737) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73738812673 is a prime.

It is not a weakly prime, because it can be changed into another prime (73738812677) 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, 36869406336 + 36869406337.

It is an arithmetic number, because the mean of its divisors is an integer number (36869406337).

Almost surely, 2^73738812673 is an apocalyptic number.

It is an amenable number.

73738812673 is a deficient number, since it is larger than the sum of its proper divisors (1).

73738812673 is an equidigital number, since it uses as much as digits as its factorization.

73738812673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 55.

The spelling of 73738812673 in words is "seventy-three billion, seven hundred thirty-eight million, eight hundred twelve thousand, six hundred seventy-three".