98665237440 has 672 divisors, whose sum is σ = 430335659520. Its totient is φ = 20151705600.

The previous prime is 98665237417. The next prime is 98665237469. The reversal of 98665237440 is 4473256689.

98665237440 is a `hidden beast` number, since 9 + 8 + 6 + 6 + 523 + 74 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 13080070 + ... + 13087610.

Almost surely, 2^98665237440 is an apocalyptic number.

98665237440 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 98665237440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215167829760).

98665237440 is an abundant number, since it is smaller than the sum of its proper divisors (331670422080).

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

98665237440 is a wasteful number, since it uses less digits than its factorization.

98665237440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7641 (or 7628 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 98665237440 in words is "ninety-eight billion, six hundred sixty-five million, two hundred thirty-seven thousand, four hundred forty".