42633661129 has 2 divisors, whose sum is σ = 42633661130. Its totient is φ = 42633661128.

The previous prime is 42633661127. The next prime is 42633661139. The reversal of 42633661129 is 92116633624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37646476729 + 4987184400 = 194027^2 + 70620^2 .

It is a cyclic number.

It is not a de Polignac number, because 42633661129 - 2¹ = 42633661127 is a prime.

It is a super-2 number, since 2×42633661129² (a number of 22 digits) contains 22 as substring.

Together with 42633661127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42633661127) 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, 21316830564 + 21316830565.

It is an arithmetic number, because the mean of its divisors is an integer number (21316830565).

Almost surely, 2^42633661129 is an apocalyptic number.

It is an amenable number.

42633661129 is a deficient number, since it is larger than the sum of its proper divisors (1).

42633661129 is an equidigital number, since it uses as much as digits as its factorization.

42633661129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The spelling of 42633661129 in words is "forty-two billion, six hundred thirty-three million, six hundred sixty-one thousand, one hundred twenty-nine".