43432459991 has 2 divisors, whose sum is σ = 43432459992. Its totient is φ = 43432459990.

The previous prime is 43432459949. The next prime is 43432460009. The reversal of 43432459991 is 19995423434.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43432459991 is a prime.

It is a super-3 number, since 3×43432459991³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43432459691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21716229995 + 21716229996.

It is an arithmetic number, because the mean of its divisors is an integer number (21716229996).

Almost surely, 2^43432459991 is an apocalyptic number.

43432459991 is a deficient number, since it is larger than the sum of its proper divisors (1).

43432459991 is an equidigital number, since it uses as much as digits as its factorization.

43432459991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 53.

The spelling of 43432459991 in words is "forty-three billion, four hundred thirty-two million, four hundred fifty-nine thousand, nine hundred ninety-one".