898205421168 has 240 divisors, whose sum is σ = 2863221813504. Its totient is φ = 260190627840.

The previous prime is 898205421163. The next prime is 898205421227. The reversal of 898205421168 is 861124502898.

898205421168 is a `hidden beast` number, since 8 + 9 + 8 + 20 + 542 + 11 + 68 = 666.

It is a Cunningham number, because it is equal to 947737²-1.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898205421163) 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 in 47 ways as a sum of consecutive naturals, for example, 68230555 + ... + 68243717.

Almost surely, 2^898205421168 is an apocalyptic number.

898205421168 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 898205421168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1431610906752).

898205421168 is an abundant number, since it is smaller than the sum of its proper divisors (1965016392336).

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

898205421168 is a wasteful number, since it uses less digits than its factorization.

898205421168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15084 (or 15075 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 898205421168 in words is "eight hundred ninety-eight billion, two hundred five million, four hundred twenty-one thousand, one hundred sixty-eight".