43633542089 has 2 divisors, whose sum is σ = 43633542090. Its totient is φ = 43633542088.

The previous prime is 43633542067. The next prime is 43633542137. The reversal of 43633542089 is 98024533634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26020270864 + 17613271225 = 161308^2 + 132715^2 .

It is a cyclic number.

It is not a de Polignac number, because 43633542089 - 2¹² = 43633537993 is a prime.

It is not a weakly prime, because it can be changed into another prime (43633542889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21816771044 + 21816771045.

It is an arithmetic number, because the mean of its divisors is an integer number (21816771045).

Almost surely, 2^43633542089 is an apocalyptic number.

It is an amenable number.

43633542089 is a deficient number, since it is larger than the sum of its proper divisors (1).

43633542089 is an equidigital number, since it uses as much as digits as its factorization.

43633542089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 43633542089 in words is "forty-three billion, six hundred thirty-three million, five hundred forty-two thousand, eighty-nine".