3985845533450 has 24 divisors (see below), whose sum is σ = 8087642938080. Its totient is φ = 1449398375600.

The previous prime is 3985845533443. The next prime is 3985845533491. The reversal of 3985845533450 is 543355485893.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 3623495390 + ... + 3623496489.

It is an arithmetic number, because the mean of its divisors is an integer number (336985122420).

Almost surely, 2^{3985845533450} is an apocalyptic number.

3985845533450 is an abundant number, since it is smaller than the sum of its proper divisors (4101797404630).

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

3985845533450 is a wasteful number, since it uses less digits than its factorization.

3985845533450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7246991902 (or 7246991897 counting only the distinct ones).

The product of its (nonzero) digits is 155520000, while the sum is 62.

The spelling of 3985845533450 in words is "three trillion, nine hundred eighty-five billion, eight hundred forty-five million, five hundred thirty-three thousand, four hundred fifty".