43996558320037 has 2 divisors, whose sum is σ = 43996558320038. Its totient is φ = 43996558320036.

The previous prime is 43996558319971. The next prime is 43996558320041. The reversal of 43996558320037 is 73002385569934.

43996558320037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43836237359236 + 160320960801 = 6620894^2 + 400401^2 .

It is a cyclic number.

It is not a de Polignac number, because 43996558320037 - 2²³ = 43996549931429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43996553320037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21998279160018 + 21998279160019.

It is an arithmetic number, because the mean of its divisors is an integer number (21998279160019).

Almost surely, 2^{43996558320037} is an apocalyptic number.

It is an amenable number.

43996558320037 is a deficient number, since it is larger than the sum of its proper divisors (1).

43996558320037 is an equidigital number, since it uses as much as digits as its factorization.

43996558320037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 146966400, while the sum is 64.

The spelling of 43996558320037 in words is "forty-three trillion, nine hundred ninety-six billion, five hundred fifty-eight million, three hundred twenty thousand, thirty-seven".