43426584425437 has 2 divisors, whose sum is σ = 43426584425438. Its totient is φ = 43426584425436.

The previous prime is 43426584425351. The next prime is 43426584425507. The reversal of 43426584425437 is 73452448562434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36835601346756 + 6590983078681 = 6069234^2 + 2567291^2 .

It is a cyclic number.

It is not a de Polignac number, because 43426584425437 - 2⁷ = 43426584425309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43426584425737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21713292212718 + 21713292212719.

It is an arithmetic number, because the mean of its divisors is an integer number (21713292212719).

Almost surely, 2^{43426584425437} is an apocalyptic number.

It is an amenable number.

43426584425437 is a deficient number, since it is larger than the sum of its proper divisors (1).

43426584425437 is an equidigital number, since it uses as much as digits as its factorization.

43426584425437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 309657600, while the sum is 61.

The spelling of 43426584425437 in words is "forty-three trillion, four hundred twenty-six billion, five hundred eighty-four million, four hundred twenty-five thousand, four hundred thirty-seven".