74217473254693 has 2 divisors, whose sum is σ = 74217473254694. Its totient is φ = 74217473254692.

The previous prime is 74217473254669. The next prime is 74217473254709. The reversal of 74217473254693 is 39645237471247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55991592459009 + 18225880795684 = 7482753^2 + 4269178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74217473254693 is a prime.

It is a super-2 number, since 2×74217473254693² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74217473254643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37108736627346 + 37108736627347.

It is an arithmetic number, because the mean of its divisors is an integer number (37108736627347).

Almost surely, 2^{74217473254693} is an apocalyptic number.

It is an amenable number.

74217473254693 is a deficient number, since it is larger than the sum of its proper divisors (1).

74217473254693 is an equidigital number, since it uses as much as digits as its factorization.

74217473254693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 213373440, while the sum is 64.

The spelling of 74217473254693 in words is "seventy-four trillion, two hundred seventeen billion, four hundred seventy-three million, two hundred fifty-four thousand, six hundred ninety-three".