42318777869 has 2 divisors, whose sum is σ = 42318777870. Its totient is φ = 42318777868.

The previous prime is 42318777817. The next prime is 42318777899. The reversal of 42318777869 is 96877781324.

42318777869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30133488100 + 12185289769 = 173590^2 + 110387^2 .

It is a cyclic number.

It is not a de Polignac number, because 42318777869 - 2¹² = 42318773773 is a prime.

It is a super-2 number, since 2×42318777869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42318777899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21159388934 + 21159388935.

It is an arithmetic number, because the mean of its divisors is an integer number (21159388935).

Almost surely, 2^42318777869 is an apocalyptic number.

It is an amenable number.

42318777869 is a deficient number, since it is larger than the sum of its proper divisors (1).

42318777869 is an equidigital number, since it uses as much as digits as its factorization.

42318777869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 62.

The spelling of 42318777869 in words is "forty-two billion, three hundred eighteen million, seven hundred seventy-seven thousand, eight hundred sixty-nine".