898452817878 has 64 divisors (see below), whose sum is σ = 2243698237440. Its totient is φ = 233010170400.

The previous prime is 898452817877. The next prime is 898452817939. The reversal of 898452817878 is 878718254898.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898452817877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1171038 + ... + 1779953.

It is an arithmetic number, because the mean of its divisors is an integer number (35057784960).

Almost surely, 2^898452817878 is an apocalyptic number.

898452817878 is an abundant number, since it is smaller than the sum of its proper divisors (1345245419562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

898452817878 is a wasteful number, since it uses less digits than its factorization.

898452817878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951673.

The product of its digits is 578027520, while the sum is 75.

The spelling of 898452817878 in words is "eight hundred ninety-eight billion, four hundred fifty-two million, eight hundred seventeen thousand, eight hundred seventy-eight".