74644885429 has 2 divisors, whose sum is σ = 74644885430. Its totient is φ = 74644885428.

The previous prime is 74644885411. The next prime is 74644885457. The reversal of 74644885429 is 92458844647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40076036100 + 34568849329 = 200190^2 + 185927^2 .

It is a cyclic number.

It is not a de Polignac number, because 74644885429 - 2¹⁷ = 74644754357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74644885409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37322442714 + 37322442715.

It is an arithmetic number, because the mean of its divisors is an integer number (37322442715).

Almost surely, 2^74644885429 is an apocalyptic number.

It is an amenable number.

74644885429 is a deficient number, since it is larger than the sum of its proper divisors (1).

74644885429 is an equidigital number, since it uses as much as digits as its factorization.

74644885429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61931520, while the sum is 61.

The spelling of 74644885429 in words is "seventy-four billion, six hundred forty-four million, eight hundred eighty-five thousand, four hundred twenty-nine".