73664777558971 has 2 divisors, whose sum is σ = 73664777558972. Its totient is φ = 73664777558970.

The previous prime is 73664777558947. The next prime is 73664777558989. The reversal of 73664777558971 is 17985577746637.

It is a strong prime.

It is an emirp because it is prime and its reverse (17985577746637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73664777558971 - 2³⁹ = 73115021745083 is a prime.

It is not a weakly prime, because it can be changed into another prime (73664777556971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36832388779485 + 36832388779486.

It is an arithmetic number, because the mean of its divisors is an integer number (36832388779486).

Almost surely, 2^{73664777558971} is an apocalyptic number.

73664777558971 is a deficient number, since it is larger than the sum of its proper divisors (1).

73664777558971 is an equidigital number, since it uses as much as digits as its factorization.

73664777558971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13069123200, while the sum is 82.

The spelling of 73664777558971 in words is "seventy-three trillion, six hundred sixty-four billion, seven hundred seventy-seven million, five hundred fifty-eight thousand, nine hundred seventy-one".