16861051166 has 8 divisors (see below), whose sum is σ = 25298298480. Its totient is φ = 8428285008.

The previous prime is 16861051147. The next prime is 16861051169. The reversal of 16861051166 is 66115016861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16861051169) by changing a digit.

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, 1110866 + ... + 1125941.

It is an arithmetic number, because the mean of its divisors is an integer number (3162287310).

Almost surely, 2^16861051166 is an apocalyptic number.

16861051166 is a deficient number, since it is larger than the sum of its proper divisors (8437247314).

16861051166 is a wasteful number, since it uses less digits than its factorization.

16861051166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240578.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 16861051166 in words is "sixteen billion, eight hundred sixty-one million, fifty-one thousand, one hundred sixty-six".