42896869817 has 2 divisors, whose sum is σ = 42896869818. Its totient is φ = 42896869816.

The previous prime is 42896869747. The next prime is 42896869837. The reversal of 42896869817 is 71896869824.

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., 42737706361 + 159163456 = 206731^2 + 12616^2 .

It is a cyclic number.

It is not a de Polignac number, because 42896869817 - 2¹⁰ = 42896868793 is a prime.

It is a super-2 number, since 2×42896869817² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42896869837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21448434908 + 21448434909.

It is an arithmetic number, because the mean of its divisors is an integer number (21448434909).

Almost surely, 2^42896869817 is an apocalyptic number.

It is an amenable number.

42896869817 is a deficient number, since it is larger than the sum of its proper divisors (1).

42896869817 is an equidigital number, since it uses as much as digits as its factorization.

42896869817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 68.

The spelling of 42896869817 in words is "forty-two billion, eight hundred ninety-six million, eight hundred sixty-nine thousand, eight hundred seventeen".