75066443663 has 2 divisors, whose sum is σ = 75066443664. Its totient is φ = 75066443662.

The previous prime is 75066443659. The next prime is 75066443671. The reversal of 75066443663 is 36634466057.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75066443663 - 2² = 75066443659 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75066443693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37533221831 + 37533221832.

It is an arithmetic number, because the mean of its divisors is an integer number (37533221832).

Almost surely, 2^75066443663 is an apocalyptic number.

75066443663 is a deficient number, since it is larger than the sum of its proper divisors (1).

75066443663 is an equidigital number, since it uses as much as digits as its factorization.

75066443663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 50.

The spelling of 75066443663 in words is "seventy-five billion, sixty-six million, four hundred forty-three thousand, six hundred sixty-three".