43432223437 has 2 divisors, whose sum is σ = 43432223438. Its totient is φ = 43432223436.

The previous prime is 43432223413. The next prime is 43432223453. The reversal of 43432223437 is 73432223434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41528733796 + 1903489641 = 203786^2 + 43629^2 .

It is a cyclic number.

It is not a de Polignac number, because 43432223437 - 2⁷ = 43432223309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43432223396 and 43432223405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43432223537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21716111718 + 21716111719.

It is an arithmetic number, because the mean of its divisors is an integer number (21716111719).

Almost surely, 2^43432223437 is an apocalyptic number.

It is an amenable number.

43432223437 is a deficient number, since it is larger than the sum of its proper divisors (1).

43432223437 is an equidigital number, since it uses as much as digits as its factorization.

43432223437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 37.

The spelling of 43432223437 in words is "forty-three billion, four hundred thirty-two million, two hundred twenty-three thousand, four hundred thirty-seven".