3885912123840 has 336 divisors, whose sum is σ = 13668476474016. Its totient is φ = 1012995072000.

The previous prime is 3885912123833. The next prime is 3885912123923. The reversal of 3885912123840 is 483212195883.

3885912123840 is a `hidden beast` number, since 3 + 8 + 8 + 591 + 2 + 1 + 2 + 3 + 8 + 40 = 666.

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 47 ways as a sum of consecutive naturals, for example, 28567990 + ... + 28703690.

It is an arithmetic number, because the mean of its divisors is an integer number (40679989506).

Almost surely, 2^{3885912123840} is an apocalyptic number.

3885912123840 is a gapful number since it is divisible by the number (30) 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 3885912123840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6834238237008).

3885912123840 is an abundant number, since it is smaller than the sum of its proper divisors (9782564350176).

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

3885912123840 is a wasteful number, since it uses less digits than its factorization.

3885912123840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135948 (or 135935 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 3885912123840 in words is "three trillion, eight hundred eighty-five billion, nine hundred twelve million, one hundred twenty-three thousand, eight hundred forty".