89563841837 has 2 divisors, whose sum is σ = 89563841838. Its totient is φ = 89563841836.

The previous prime is 89563841821. The next prime is 89563841869. The reversal of 89563841837 is 73814836598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60302660356 + 29261181481 = 245566^2 + 171059^2 .

It is a cyclic number.

It is not a de Polignac number, because 89563841837 - 2⁴ = 89563841821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89563841837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89563241837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44781920918 + 44781920919.

It is an arithmetic number, because the mean of its divisors is an integer number (44781920919).

Almost surely, 2^89563841837 is an apocalyptic number.

It is an amenable number.

89563841837 is a deficient number, since it is larger than the sum of its proper divisors (1).

89563841837 is an equidigital number, since it uses as much as digits as its factorization.

89563841837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 62.

The spelling of 89563841837 in words is "eighty-nine billion, five hundred sixty-three million, eight hundred forty-one thousand, eight hundred thirty-seven".