99186877440 has 528 divisors, whose sum is σ = 394387793280. Its totient is φ = 22578462720.

The previous prime is 99186877351. The next prime is 99186877457. The reversal of 99186877440 is 4477868199.

99186877440 is a `hidden beast` number, since 9 + 9 + 186 + 8 + 7 + 7 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 47 ways as a sum of consecutive naturals, for example, 106766896 + ... + 106767824.

Almost surely, 2^99186877440 is an apocalyptic number.

99186877440 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 99186877440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197193896640).

99186877440 is an abundant number, since it is smaller than the sum of its proper divisors (295200915840).

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

99186877440 is a wasteful number, since it uses less digits than its factorization.

99186877440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 99186877440 in words is "ninety-nine billion, one hundred eighty-six million, eight hundred seventy-seven thousand, four hundred forty".