74138585441 has 2 divisors, whose sum is σ = 74138585442. Its totient is φ = 74138585440.

The previous prime is 74138585431. The next prime is 74138585489. The reversal of 74138585441 is 14458583147.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45443580625 + 28695004816 = 213175^2 + 169396^2 .

It is a cyclic number.

It is not a de Polignac number, because 74138585441 - 2⁶ = 74138585377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74138585441.

It is not a weakly prime, because it can be changed into another prime (74138585431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37069292720 + 37069292721.

It is an arithmetic number, because the mean of its divisors is an integer number (37069292721).

Almost surely, 2^74138585441 is an apocalyptic number.

It is an amenable number.

74138585441 is a deficient number, since it is larger than the sum of its proper divisors (1).

74138585441 is an equidigital number, since it uses as much as digits as its factorization.

74138585441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2150400, while the sum is 50.

The spelling of 74138585441 in words is "seventy-four billion, one hundred thirty-eight million, five hundred eighty-five thousand, four hundred forty-one".