898136325840 has 80 divisors (see below), whose sum is σ = 2998393590528. Its totient is φ = 221079710208.

The previous prime is 898136325839. The next prime is 898136325871. The reversal of 898136325840 is 48523631898.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143928984 + ... + 143935223.

Almost surely, 2^898136325840 is an apocalyptic number.

898136325840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

898136325840 is an abundant number, since it is smaller than the sum of its proper divisors (2100257264688).

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

898136325840 is a wasteful number, since it uses less digits than its factorization.

898136325840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287864236 (or 287864230 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 898136325840 in words is "eight hundred ninety-eight billion, one hundred thirty-six million, three hundred twenty-five thousand, eight hundred forty".