74570085641 has 2 divisors, whose sum is σ = 74570085642. Its totient is φ = 74570085640.

The previous prime is 74570085637. The next prime is 74570085643. The reversal of 74570085641 is 14658007547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54456889600 + 20113196041 = 233360^2 + 141821^2 .

It is a cyclic number.

It is not a de Polignac number, because 74570085641 - 2² = 74570085637 is a prime.

Together with 74570085643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74570085643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37285042820 + 37285042821.

It is an arithmetic number, because the mean of its divisors is an integer number (37285042821).

Almost surely, 2^74570085641 is an apocalyptic number.

It is an amenable number.

74570085641 is a deficient number, since it is larger than the sum of its proper divisors (1).

74570085641 is an equidigital number, since it uses as much as digits as its factorization.

74570085641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 74570085641 in words is "seventy-four billion, five hundred seventy million, eighty-five thousand, six hundred forty-one".