42513426793 has 2 divisors, whose sum is σ = 42513426794. Its totient is φ = 42513426792.

The previous prime is 42513426779. The next prime is 42513426827. The reversal of 42513426793 is 39762431524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22499100009 + 20014326784 = 149997^2 + 141472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42513426793 is a prime.

It is not a weakly prime, because it can be changed into another prime (42513426773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256713396 + 21256713397.

It is an arithmetic number, because the mean of its divisors is an integer number (21256713397).

Almost surely, 2^42513426793 is an apocalyptic number.

It is an amenable number.

42513426793 is a deficient number, since it is larger than the sum of its proper divisors (1).

42513426793 is an equidigital number, since it uses as much as digits as its factorization.

42513426793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

The spelling of 42513426793 in words is "forty-two billion, five hundred thirteen million, four hundred twenty-six thousand, seven hundred ninety-three".