74543005633 has 2 divisors, whose sum is σ = 74543005634. Its totient is φ = 74543005632.

The previous prime is 74543005549. The next prime is 74543005637. The reversal of 74543005633 is 33650034547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39795063169 + 34747942464 = 199487^2 + 186408^2 .

It is an emirp because it is prime and its reverse (33650034547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74543005633 - 2²⁵ = 74509451201 is a prime.

It is not a weakly prime, because it can be changed into another prime (74543005637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37271502816 + 37271502817.

It is an arithmetic number, because the mean of its divisors is an integer number (37271502817).

Almost surely, 2^74543005633 is an apocalyptic number.

It is an amenable number.

74543005633 is a deficient number, since it is larger than the sum of its proper divisors (1).

74543005633 is an equidigital number, since it uses as much as digits as its factorization.

74543005633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 40.

The spelling of 74543005633 in words is "seventy-four billion, five hundred forty-three million, five thousand, six hundred thirty-three".