43202872861 has 2 divisors, whose sum is σ = 43202872862. Its totient is φ = 43202872860.

The previous prime is 43202872849. The next prime is 43202872907. The reversal of 43202872861 is 16827820234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40517664100 + 2685208761 = 201290^2 + 51819^2 .

It is a cyclic number.

It is not a de Polignac number, because 43202872861 - 2¹¹ = 43202870813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43202872261) 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, 21601436430 + 21601436431.

It is an arithmetic number, because the mean of its divisors is an integer number (21601436431).

Almost surely, 2^43202872861 is an apocalyptic number.

It is an amenable number.

43202872861 is a deficient number, since it is larger than the sum of its proper divisors (1).

43202872861 is an equidigital number, since it uses as much as digits as its factorization.

43202872861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 43202872861 in words is "forty-three billion, two hundred two million, eight hundred seventy-two thousand, eight hundred sixty-one".