74045846509 has 2 divisors, whose sum is σ = 74045846510. Its totient is φ = 74045846508.

The previous prime is 74045846489. The next prime is 74045846549. The reversal of 74045846509 is 90564854047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50530544100 + 23515302409 = 224790^2 + 153347^2 .

It is a cyclic number.

It is not a de Polignac number, because 74045846509 - 2²⁵ = 74012292077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74045846549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37022923254 + 37022923255.

It is an arithmetic number, because the mean of its divisors is an integer number (37022923255).

Almost surely, 2^74045846509 is an apocalyptic number.

It is an amenable number.

74045846509 is a deficient number, since it is larger than the sum of its proper divisors (1).

74045846509 is an equidigital number, since it uses as much as digits as its factorization.

74045846509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 74045846509 in words is "seventy-four billion, forty-five million, eight hundred forty-six thousand, five hundred nine".