898642643659 has 2 divisors, whose sum is σ = 898642643660. Its totient is φ = 898642643658.

The previous prime is 898642643651. The next prime is 898642643663. The reversal of 898642643659 is 956346246898.

898642643659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 898642643659 - 2³ = 898642643651 is a prime.

It is not a weakly prime, because it can be changed into another prime (898642643651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449321321829 + 449321321830.

It is an arithmetic number, because the mean of its divisors is an integer number (449321321830).

Almost surely, 2^898642643659 is an apocalyptic number.

898642643659 is a deficient number, since it is larger than the sum of its proper divisors (1).

898642643659 is an equidigital number, since it uses as much as digits as its factorization.

898642643659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537477120, while the sum is 70.

The spelling of 898642643659 in words is "eight hundred ninety-eight billion, six hundred forty-two million, six hundred forty-three thousand, six hundred fifty-nine".