898508549640 has 64 divisors (see below), whose sum is σ = 2902873780800. Its totient is φ = 221171334912.

The previous prime is 898508549623. The next prime is 898508549651. The reversal of 898508549640 is 46945805898.

It is a super-2 number, since 2×898508549640² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287981950 + ... + 287985069.

It is an arithmetic number, because the mean of its divisors is an integer number (45357402825).

Almost surely, 2^898508549640 is an apocalyptic number.

It is an amenable number.

898508549640 is an abundant number, since it is smaller than the sum of its proper divisors (2004365231160).

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

898508549640 is a wasteful number, since it uses less digits than its factorization.

898508549640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575967046 (or 575967042 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 66.

The spelling of 898508549640 in words is "eight hundred ninety-eight billion, five hundred eight million, five hundred forty-nine thousand, six hundred forty".