43321500351049 has 2 divisors, whose sum is σ = 43321500351050. Its totient is φ = 43321500351048.

The previous prime is 43321500351023. The next prime is 43321500351119. The reversal of 43321500351049 is 94015300512334.

43321500351049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39520170261049 + 3801330090000 = 6286507^2 + 1949700^2 .

It is a cyclic number.

It is not a de Polignac number, because 43321500351049 - 2²⁵ = 43321466796617 is a prime.

It is not a weakly prime, because it can be changed into another prime (43321500358049) 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, 21660750175524 + 21660750175525.

It is an arithmetic number, because the mean of its divisors is an integer number (21660750175525).

Almost surely, 2^{43321500351049} is an apocalyptic number.

It is an amenable number.

43321500351049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43321500351049 is an equidigital number, since it uses as much as digits as its factorization.

43321500351049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 43321500351049 in words is "forty-three trillion, three hundred twenty-one billion, five hundred million, three hundred fifty-one thousand, forty-nine".