74041406209 has 2 divisors, whose sum is σ = 74041406210. Its totient is φ = 74041406208.

The previous prime is 74041406203. The next prime is 74041406221. The reversal of 74041406209 is 90260414047.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72335716209 + 1705690000 = 268953^2 + 41300^2 .

It is a cyclic number.

It is not a de Polignac number, because 74041406209 - 2⁵ = 74041406177 is a prime.

It is a super-2 number, since 2×74041406209² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74041406203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37020703104 + 37020703105.

It is an arithmetic number, because the mean of its divisors is an integer number (37020703105).

Almost surely, 2^74041406209 is an apocalyptic number.

It is an amenable number.

74041406209 is a deficient number, since it is larger than the sum of its proper divisors (1).

74041406209 is an equidigital number, since it uses as much as digits as its factorization.

74041406209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 74041406209 in words is "seventy-four billion, forty-one million, four hundred six thousand, two hundred nine".