18871686974880 has 384 divisors, whose sum is σ = 68340715027200. Its totient is φ = 4858050097152.

The previous prime is 18871686974831. The next prime is 18871686974893. The reversal of 18871686974880 is 8847968617881.

18871686974880 is a `hidden beast` number, since 1 + 8 + 8 + 71 + 6 + 8 + 69 + 7 + 488 + 0 = 666.

It is a super-2 number, since 2×18871686974880² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18871686974880.

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 63 ways as a sum of consecutive naturals, for example, 997595182 + ... + 997614098.

It is an arithmetic number, because the mean of its divisors is an integer number (177970612050).

Almost surely, 2^{18871686974880} is an apocalyptic number.

18871686974880 is a gapful number since it is divisible by the number (10) 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 18871686974880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34170357513600).

18871686974880 is an abundant number, since it is smaller than the sum of its proper divisors (49469028052320).

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

18871686974880 is a wasteful number, since it uses less digits than its factorization.

18871686974880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26933 (or 26919 counting only the distinct ones).

The product of its (nonzero) digits is 2080899072, while the sum is 81.

The spelling of 18871686974880 in words is "eighteen trillion, eight hundred seventy-one billion, six hundred eighty-six million, nine hundred seventy-four thousand, eight hundred eighty".