74313409665251 has 2 divisors, whose sum is σ = 74313409665252. Its totient is φ = 74313409665250.

The previous prime is 74313409665221. The next prime is 74313409665263. The reversal of 74313409665251 is 15256690431347.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74313409665251 is a prime.

It is not a weakly prime, because it can be changed into another prime (74313409665211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37156704832625 + 37156704832626.

It is an arithmetic number, because the mean of its divisors is an integer number (37156704832626).

Almost surely, 2^{74313409665251} is an apocalyptic number.

74313409665251 is a deficient number, since it is larger than the sum of its proper divisors (1).

74313409665251 is an equidigital number, since it uses as much as digits as its factorization.

74313409665251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 74313409665251 in words is "seventy-four trillion, three hundred thirteen billion, four hundred nine million, six hundred sixty-five thousand, two hundred fifty-one".