43722893491 has 2 divisors, whose sum is σ = 43722893492. Its totient is φ = 43722893490.

The previous prime is 43722893483. The next prime is 43722893561. The reversal of 43722893491 is 19439822734.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43722893491 - 2³ = 43722893483 is a prime.

It is not a weakly prime, because it can be changed into another prime (43722891491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21861446745 + 21861446746.

It is an arithmetic number, because the mean of its divisors is an integer number (21861446746).

Almost surely, 2^43722893491 is an apocalyptic number.

43722893491 is a deficient number, since it is larger than the sum of its proper divisors (1).

43722893491 is an equidigital number, since it uses as much as digits as its factorization.

43722893491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 52.

The spelling of 43722893491 in words is "forty-three billion, seven hundred twenty-two million, eight hundred ninety-three thousand, four hundred ninety-one".