74565042943 has 2 divisors, whose sum is σ = 74565042944. Its totient is φ = 74565042942.

The previous prime is 74565042941. The next prime is 74565042953. The reversal of 74565042943 is 34924056547.

It is a weak prime.

It is an emirp because it is prime and its reverse (34924056547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74565042943 - 2¹ = 74565042941 is a prime.

Together with 74565042941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74565042941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37282521471 + 37282521472.

It is an arithmetic number, because the mean of its divisors is an integer number (37282521472).

Almost surely, 2^74565042943 is an apocalyptic number.

74565042943 is a deficient number, since it is larger than the sum of its proper divisors (1).

74565042943 is an equidigital number, since it uses as much as digits as its factorization.

74565042943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 74565042943 in words is "seventy-four billion, five hundred sixty-five million, forty-two thousand, nine hundred forty-three".