123971161166 has 8 divisors (see below), whose sum is σ = 186105630000. Its totient is φ = 61935951168.

The previous prime is 123971161157. The next prime is 123971161177. The reversal of 123971161166 is 661161179321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24811586 + ... + 24816581.

It is an arithmetic number, because the mean of its divisors is an integer number (23263203750).

Almost surely, 2^123971161166 is an apocalyptic number.

123971161166 is a deficient number, since it is larger than the sum of its proper divisors (62134468834).

123971161166 is a wasteful number, since it uses less digits than its factorization.

123971161166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49629418.

The product of its digits is 81648, while the sum is 44.

The spelling of 123971161166 in words is "one hundred twenty-three billion, nine hundred seventy-one million, one hundred sixty-one thousand, one hundred sixty-six".