74200716509 has 2 divisors, whose sum is σ = 74200716510. Its totient is φ = 74200716508.

The previous prime is 74200716463. The next prime is 74200716539. The reversal of 74200716509 is 90561700247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71943041284 + 2257675225 = 268222^2 + 47515^2 .

It is a cyclic number.

It is not a de Polignac number, because 74200716509 - 2⁸ = 74200716253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74200716539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37100358254 + 37100358255.

It is an arithmetic number, because the mean of its divisors is an integer number (37100358255).

Almost surely, 2^74200716509 is an apocalyptic number.

It is an amenable number.

74200716509 is a deficient number, since it is larger than the sum of its proper divisors (1).

74200716509 is an equidigital number, since it uses as much as digits as its factorization.

74200716509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 74200716509 in words is "seventy-four billion, two hundred million, seven hundred sixteen thousand, five hundred nine".