42616265449 has 2 divisors, whose sum is σ = 42616265450. Its totient is φ = 42616265448.

The previous prime is 42616265443. The next prime is 42616265459. The reversal of 42616265449 is 94456261624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30391646224 + 12224619225 = 174332^2 + 110565^2 .

It is a cyclic number.

It is not a de Polignac number, because 42616265449 - 2⁹ = 42616264937 is a prime.

It is a super-2 number, since 2×42616265449² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42616265443) 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, 21308132724 + 21308132725.

It is an arithmetic number, because the mean of its divisors is an integer number (21308132725).

Almost surely, 2^42616265449 is an apocalyptic number.

It is an amenable number.

42616265449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42616265449 is an equidigital number, since it uses as much as digits as its factorization.

42616265449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 49.

The spelling of 42616265449 in words is "forty-two billion, six hundred sixteen million, two hundred sixty-five thousand, four hundred forty-nine".