108853587990 has 256 divisors, whose sum is σ = 349823232000. Its totient is φ = 23529553920.

The previous prime is 108853587917. The next prime is 108853588003. The reversal of 108853587990 is 99785358801.

108853587990 is a `hidden beast` number, since 1 + 0 + 8 + 8 + 535 + 8 + 7 + 9 + 90 = 666.

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

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 127 ways as a sum of consecutive naturals, for example, 23015946 + ... + 23020674.

It is an arithmetic number, because the mean of its divisors is an integer number (1366497000).

Almost surely, 2^108853587990 is an apocalyptic number.

108853587990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 108853587990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174911616000).

108853587990 is an abundant number, since it is smaller than the sum of its proper divisors (240969644010).

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

108853587990 is a wasteful number, since it uses less digits than its factorization.

108853587990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5412 (or 5406 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 63.

The spelling of 108853587990 in words is "one hundred eight billion, eight hundred fifty-three million, five hundred eighty-seven thousand, nine hundred ninety".