42173761633 has 2 divisors, whose sum is σ = 42173761634. Its totient is φ = 42173761632.

The previous prime is 42173761583. The next prime is 42173761639. The reversal of 42173761633 is 33616737124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21910808529 + 20262953104 = 148023^2 + 142348^2 .

It is a cyclic number.

It is not a de Polignac number, because 42173761633 - 2²⁹ = 41636890721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42173761633.

It is not a weakly prime, because it can be changed into another prime (42173761639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21086880816 + 21086880817.

It is an arithmetic number, because the mean of its divisors is an integer number (21086880817).

Almost surely, 2^42173761633 is an apocalyptic number.

It is an amenable number.

42173761633 is a deficient number, since it is larger than the sum of its proper divisors (1).

42173761633 is an equidigital number, since it uses as much as digits as its factorization.

42173761633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 43.

The spelling of 42173761633 in words is "forty-two billion, one hundred seventy-three million, seven hundred sixty-one thousand, six hundred thirty-three".