73243975699 has 2 divisors, whose sum is σ = 73243975700. Its totient is φ = 73243975698.

The previous prime is 73243975681. The next prime is 73243975747. The reversal of 73243975699 is 99657934237.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99657934237) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73243975699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73243975699.

It is not a weakly prime, because it can be changed into another prime (73243975639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36621987849 + 36621987850.

It is an arithmetic number, because the mean of its divisors is an integer number (36621987850).

Almost surely, 2^73243975699 is an apocalyptic number.

73243975699 is a deficient number, since it is larger than the sum of its proper divisors (1).

73243975699 is an equidigital number, since it uses as much as digits as its factorization.

73243975699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77157360, while the sum is 64.

The spelling of 73243975699 in words is "seventy-three billion, two hundred forty-three million, nine hundred seventy-five thousand, six hundred ninety-nine".