98651989440 has 672 divisors, whose sum is σ = 361523036160. Its totient is φ = 24656486400.

The previous prime is 98651989393. The next prime is 98651989531. The reversal of 98651989440 is 4498915689.

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 95 ways as a sum of consecutive naturals, for example, 500771422 + ... + 500771618.

Almost surely, 2^98651989440 is an apocalyptic number.

98651989440 is a gapful number since it is divisible by the number (90) 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 98651989440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180761518080).

98651989440 is an abundant number, since it is smaller than the sum of its proper divisors (262871046720).

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

98651989440 is a wasteful number, since it uses less digits than its factorization.

98651989440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 98651989440 in words is "ninety-eight billion, six hundred fifty-one million, nine hundred eighty-nine thousand, four hundred forty".