42148818769 has 2 divisors, whose sum is σ = 42148818770. Its totient is φ = 42148818768.

The previous prime is 42148818697. The next prime is 42148818779. The reversal of 42148818769 is 96781884124.

42148818769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (42148818697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34174328769 + 7974490000 = 184863^2 + 89300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42148818769 is a prime.

It is a super-2 number, since 2×42148818769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42148818779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21074409384 + 21074409385.

It is an arithmetic number, because the mean of its divisors is an integer number (21074409385).

Almost surely, 2^42148818769 is an apocalyptic number.

It is an amenable number.

42148818769 is a deficient number, since it is larger than the sum of its proper divisors (1).

42148818769 is an equidigital number, since it uses as much as digits as its factorization.

42148818769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 58.

The spelling of 42148818769 in words is "forty-two billion, one hundred forty-eight million, eight hundred eighteen thousand, seven hundred sixty-nine".