3871664178876 has 240 divisors, whose sum is σ = 11049291230208. Its totient is φ = 1174996368000.

The previous prime is 3871664178827. The next prime is 3871664178919. The reversal of 3871664178876 is 6788714661783.

3871664178876 is a `hidden beast` number, since 3 + 8 + 7 + 1 + 66 + 417 + 88 + 76 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 220586301 + ... + 220603851.

Almost surely, 2^{3871664178876} is an apocalyptic number.

3871664178876 is a gapful number since it is divisible by the number (36) 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 3871664178876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5524645615104).

3871664178876 is an abundant number, since it is smaller than the sum of its proper divisors (7177627051332).

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

3871664178876 is a wasteful number, since it uses less digits than its factorization.

3871664178876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18294 (or 18283 counting only the distinct ones).

The product of its digits is 455196672, while the sum is 72.

The spelling of 3871664178876 in words is "three trillion, eight hundred seventy-one billion, six hundred sixty-four million, one hundred seventy-eight thousand, eight hundred seventy-six".