43832720993 has 2 divisors, whose sum is σ = 43832720994. Its totient is φ = 43832720992.

The previous prime is 43832720923. The next prime is 43832721019. The reversal of 43832720993 is 39902723834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41450109649 + 2382611344 = 203593^2 + 48812^2 .

It is a cyclic number.

It is not a de Polignac number, because 43832720993 - 2¹⁶ = 43832655457 is a prime.

It is not a weakly prime, because it can be changed into another prime (43832720903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21916360496 + 21916360497.

It is an arithmetic number, because the mean of its divisors is an integer number (21916360497).

Almost surely, 2^43832720993 is an apocalyptic number.

It is an amenable number.

43832720993 is a deficient number, since it is larger than the sum of its proper divisors (1).

43832720993 is an equidigital number, since it uses as much as digits as its factorization.

43832720993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 43832720993 in words is "forty-three billion, eight hundred thirty-two million, seven hundred twenty thousand, nine hundred ninety-three".