3866889868776 has 384 divisors, whose sum is σ = 12674435679360. Its totient is φ = 1091476684800.

The previous prime is 3866889868757. The next prime is 3866889868783. The reversal of 3866889868776 is 6778689886683.

3866889868776 is a `hidden beast` number, since 386 + 6 + 8 + 8 + 9 + 86 + 87 + 76 = 666.

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 95 ways as a sum of consecutive naturals, for example, 35207386 + ... + 35317046.

It is an arithmetic number, because the mean of its divisors is an integer number (33006342915).

Almost surely, 2^{3866889868776} is an apocalyptic number.

3866889868776 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 3866889868776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6337217839680).

3866889868776 is an abundant number, since it is smaller than the sum of its proper divisors (8807545810584).

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

3866889868776 is a wasteful number, since it uses less digits than its factorization.

3866889868776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109807 (or 109791 counting only the distinct ones).

The product of its digits is 56184274944, while the sum is 90.

The spelling of 3866889868776 in words is "three trillion, eight hundred sixty-six billion, eight hundred eighty-nine million, eight hundred sixty-eight thousand, seven hundred seventy-six".