99837606240 has 480 divisors, whose sum is σ = 358150494240. Its totient is φ = 26189070336.

The previous prime is 99837606229. The next prime is 99837606241. The reversal of 99837606240 is 4260673899.

It is a happy number.

99837606240 is a `hidden beast` number, since 9 + 9 + 8 + 3 + 7 + 6 + 0 + 624 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99837606241) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 282825904 + ... + 282826256.

It is an arithmetic number, because the mean of its divisors is an integer number (746146863).

Almost surely, 2^99837606240 is an apocalyptic number.

99837606240 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 99837606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179075247120).

99837606240 is an abundant number, since it is smaller than the sum of its proper divisors (258312888000).

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

99837606240 is a wasteful number, since it uses less digits than its factorization.

99837606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 99837606240 in words is "ninety-nine billion, eight hundred thirty-seven million, six hundred six thousand, two hundred forty".