73724835817 has 2 divisors, whose sum is σ = 73724835818. Its totient is φ = 73724835816.

The previous prime is 73724835787. The next prime is 73724835827. The reversal of 73724835817 is 71853842737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72363152016 + 1361683801 = 269004^2 + 36901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73724835817 is a prime.

It is not a weakly prime, because it can be changed into another prime (73724835827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36862417908 + 36862417909.

It is an arithmetic number, because the mean of its divisors is an integer number (36862417909).

Almost surely, 2^73724835817 is an apocalyptic number.

It is an amenable number.

73724835817 is a deficient number, since it is larger than the sum of its proper divisors (1).

73724835817 is an equidigital number, since it uses as much as digits as its factorization.

73724835817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7902720, while the sum is 55.

The spelling of 73724835817 in words is "seventy-three billion, seven hundred twenty-four million, eight hundred thirty-five thousand, eight hundred seventeen".