898765456543 has 2 divisors, whose sum is σ = 898765456544. Its totient is φ = 898765456542.

The previous prime is 898765456531. The next prime is 898765456553. The reversal of 898765456543 is 345654567898.

It is a happy number.

898765456543 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 898765456543 - 2⁹ = 898765456031 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898765456553) 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, 449382728271 + 449382728272.

It is an arithmetic number, because the mean of its divisors is an integer number (449382728272).

Almost surely, 2^898765456543 is an apocalyptic number.

898765456543 is a deficient number, since it is larger than the sum of its proper divisors (1).

898765456543 is an equidigital number, since it uses as much as digits as its factorization.

898765456543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912000, while the sum is 70.

The spelling of 898765456543 in words is "eight hundred ninety-eight billion, seven hundred sixty-five million, four hundred fifty-six thousand, five hundred forty-three".