3885905745540 has 192 divisors, whose sum is σ = 14879365777920. Its totient is φ = 819883399680.

The previous prime is 3885905745529. The next prime is 3885905745641. The reversal of 3885905745540 is 455475095883.

3885905745540 is a `hidden beast` number, since 3 + 8 + 8 + 5 + 9 + 0 + 5 + 74 + 554 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39489991 + ... + 39588270.

It is an arithmetic number, because the mean of its divisors is an integer number (77496696760).

Almost surely, 2^{3885905745540} is an apocalyptic number.

3885905745540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3885905745540 is an abundant number, since it is smaller than the sum of its proper divisors (10993460032380).

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

3885905745540 is a wasteful number, since it uses less digits than its factorization.

3885905745540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79078299 (or 79078291 counting only the distinct ones).

The product of its (nonzero) digits is 120960000, while the sum is 63.

The spelling of 3885905745540 in words is "three trillion, eight hundred eighty-five billion, nine hundred five million, seven hundred forty-five thousand, five hundred forty".