74159996501909 has 2 divisors, whose sum is σ = 74159996501910. Its totient is φ = 74159996501908.

The previous prime is 74159996501873. The next prime is 74159996502043. The reversal of 74159996501909 is 90910569995147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70034771467684 + 4125225034225 = 8368678^2 + 2031065^2 .

It is a cyclic number.

It is not a de Polignac number, because 74159996501909 - 2³⁶ = 74091277025173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74159996501309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37079998250954 + 37079998250955.

It is an arithmetic number, because the mean of its divisors is an integer number (37079998250955).

Almost surely, 2^{74159996501909} is an apocalyptic number.

It is an amenable number.

74159996501909 is a deficient number, since it is larger than the sum of its proper divisors (1).

74159996501909 is an equidigital number, since it uses as much as digits as its factorization.

74159996501909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248005800, while the sum is 74.

The spelling of 74159996501909 in words is "seventy-four trillion, one hundred fifty-nine billion, nine hundred ninety-six million, five hundred one thousand, nine hundred nine".