98381972640 has 432 divisors, whose sum is σ = 380504773152. Its totient is φ = 21301926912.

The previous prime is 98381972609. The next prime is 98381972683. The reversal of 98381972640 is 4627918389.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8484927 + ... + 8496513.

It is an arithmetic number, because the mean of its divisors is an integer number (880798086).

Almost surely, 2^98381972640 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 98381972640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190252386576).

98381972640 is an abundant number, since it is smaller than the sum of its proper divisors (282122800512).

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

98381972640 is a wasteful number, since it uses less digits than its factorization.

98381972640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11657 (or 11623 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 98381972640 in words is "ninety-eight billion, three hundred eighty-one million, nine hundred seventy-two thousand, six hundred forty".