6661085437834 has 8 divisors (see below), whose sum is σ = 9991713875040. Its totient is φ = 3330514146156.

The previous prime is 6661085437823. The next prime is 6661085437849. The reversal of 6661085437834 is 4387345801666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6661085437834² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13993774 + ... + 14461945.

It is an arithmetic number, because the mean of its divisors is an integer number (1248964234380).

Almost surely, 2^{6661085437834} is an apocalyptic number.

6661085437834 is a deficient number, since it is larger than the sum of its proper divisors (3330628437206).

6661085437834 is a wasteful number, since it uses less digits than its factorization.

6661085437834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28572764.

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 6661085437834 in words is "six trillion, six hundred sixty-one billion, eighty-five million, four hundred thirty-seven thousand, eight hundred thirty-four".