43421365469 has 2 divisors, whose sum is σ = 43421365470. Its totient is φ = 43421365468.

The previous prime is 43421365457. The next prime is 43421365549. The reversal of 43421365469 is 96456312434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29985078244 + 13436287225 = 173162^2 + 115915^2 .

It is a cyclic number.

It is not a de Polignac number, because 43421365469 - 2²⁸ = 43152930013 is a prime.

It is a super-2 number, since 2×43421365469² (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 (43424365469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710682734 + 21710682735.

It is an arithmetic number, because the mean of its divisors is an integer number (21710682735).

Almost surely, 2^43421365469 is an apocalyptic number.

It is an amenable number.

43421365469 is a deficient number, since it is larger than the sum of its proper divisors (1).

43421365469 is an equidigital number, since it uses as much as digits as its factorization.

43421365469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 47.

The spelling of 43421365469 in words is "forty-three billion, four hundred twenty-one million, three hundred sixty-five thousand, four hundred sixty-nine".