18875199677850 has 384 divisors, whose sum is σ = 53704925164800. Its totient is φ = 4871608012800.

The previous prime is 18875199677797. The next prime is 18875199677911. The reversal of 18875199677850 is 5877699157881.

18875199677850 is a `hidden beast` number, since 1 + 8 + 8 + 7 + 519 + 96 + 7 + 7 + 8 + 5 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18875199677850.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5008010766 + ... + 5008014534.

It is an arithmetic number, because the mean of its divisors is an integer number (139856575950).

Almost surely, 2^{18875199677850} is an apocalyptic number.

18875199677850 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 18875199677850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26852462582400).

18875199677850 is an abundant number, since it is smaller than the sum of its proper divisors (34829725486950).

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

18875199677850 is a wasteful number, since it uses less digits than its factorization.

18875199677850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527 (or 4516 counting only the distinct ones).

The product of its (nonzero) digits is 2133734400, while the sum is 81.

The spelling of 18875199677850 in words is "eighteen trillion, eight hundred seventy-five billion, one hundred ninety-nine million, six hundred seventy-seven thousand, eight hundred fifty".