42465762649 has 2 divisors, whose sum is σ = 42465762650. Its totient is φ = 42465762648.

The previous prime is 42465762611. The next prime is 42465762673. The reversal of 42465762649 is 94626756424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26721787024 + 15743975625 = 163468^2 + 125475^2 .

It is a cyclic number.

It is not a de Polignac number, because 42465762649 - 2³⁵ = 8106024281 is a prime.

It is a super-2 number, since 2×42465762649² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42465762649.

It is not a weakly prime, because it can be changed into another prime (42465762049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21232881324 + 21232881325.

It is an arithmetic number, because the mean of its divisors is an integer number (21232881325).

Almost surely, 2^42465762649 is an apocalyptic number.

It is an amenable number.

42465762649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42465762649 is an equidigital number, since it uses as much as digits as its factorization.

42465762649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 55.

The spelling of 42465762649 in words is "forty-two billion, four hundred sixty-five million, seven hundred sixty-two thousand, six hundred forty-nine".