98491085840 has 240 divisors, whose sum is σ = 280971659520. Its totient is φ = 31925698560.

The previous prime is 98491085839. The next prime is 98491085863. The reversal of 98491085840 is 4858019489.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

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, 47740649 + ... + 47742711.

It is an arithmetic number, because the mean of its divisors is an integer number (1170715248).

Almost surely, 2^98491085840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98491085840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140485829760).

98491085840 is an abundant number, since it is smaller than the sum of its proper divisors (182480573680).

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

98491085840 is a wasteful number, since it uses less digits than its factorization.

98491085840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 98491085840 in words is "ninety-eight billion, four hundred ninety-one million, eighty-five thousand, eight hundred forty".