42522874637 has 2 divisors, whose sum is σ = 42522874638. Its totient is φ = 42522874636.

The previous prime is 42522874633. The next prime is 42522874699. The reversal of 42522874637 is 73647822524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41315034121 + 1207840516 = 203261^2 + 34754^2 .

It is a cyclic number.

It is not a de Polignac number, because 42522874637 - 2² = 42522874633 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42522874633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21261437318 + 21261437319.

It is an arithmetic number, because the mean of its divisors is an integer number (21261437319).

Almost surely, 2^42522874637 is an apocalyptic number.

It is an amenable number.

42522874637 is a deficient number, since it is larger than the sum of its proper divisors (1).

42522874637 is an equidigital number, since it uses as much as digits as its factorization.

42522874637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4515840, while the sum is 50.

The spelling of 42522874637 in words is "forty-two billion, five hundred twenty-two million, eight hundred seventy-four thousand, six hundred thirty-seven".