74217473254709 has 2 divisors, whose sum is σ = 74217473254710. Its totient is φ = 74217473254708.

The previous prime is 74217473254693. The next prime is 74217473254723. The reversal of 74217473254709 is 90745237471247.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72633517600900 + 1583955653809 = 8522530^2 + 1258553^2 .

It is an emirp because it is prime and its reverse (90745237471247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74217473254709 - 2⁴ = 74217473254693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74217473254759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37108736627354 + 37108736627355.

It is an arithmetic number, because the mean of its divisors is an integer number (37108736627355).

Almost surely, 2^{74217473254709} is an apocalyptic number.

It is an amenable number.

74217473254709 is a deficient number, since it is larger than the sum of its proper divisors (1).

74217473254709 is an equidigital number, since it uses as much as digits as its factorization.

74217473254709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82978560, while the sum is 62.

The spelling of 74217473254709 in words is "seventy-four trillion, two hundred seventeen billion, four hundred seventy-three million, two hundred fifty-four thousand, seven hundred nine".