42775598629 has 2 divisors, whose sum is σ = 42775598630. Its totient is φ = 42775598628.

The previous prime is 42775598587. The next prime is 42775598633. The reversal of 42775598629 is 92689557724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40089249729 + 2686348900 = 200223^2 + 51830^2 .

It is a cyclic number.

It is not a de Polignac number, because 42775598629 - 2¹⁹ = 42775074341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42775598659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387799314 + 21387799315.

It is an arithmetic number, because the mean of its divisors is an integer number (21387799315).

Almost surely, 2^42775598629 is an apocalyptic number.

It is an amenable number.

42775598629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775598629 is an equidigital number, since it uses as much as digits as its factorization.

42775598629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76204800, while the sum is 64.

The spelling of 42775598629 in words is "forty-two billion, seven hundred seventy-five million, five hundred ninety-eight thousand, six hundred twenty-nine".