6861668123 has 8 divisors (see below), whose sum is σ = 7182775296. Its totient is φ = 6546796200.

The previous prime is 6861668117. The next prime is 6861668147. The reversal of 6861668123 is 3218661686.

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

It is a cyclic number.

It is not a de Polignac number, because 6861668123 - 2⁶ = 6861668059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6861668173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1556561 + ... + 1560962.

It is an arithmetic number, because the mean of its divisors is an integer number (897846912).

Almost surely, 2^6861668123 is an apocalyptic number.

6861668123 is a deficient number, since it is larger than the sum of its proper divisors (321107173).

6861668123 is a wasteful number, since it uses less digits than its factorization.

6861668123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117625.

The product of its digits is 497664, while the sum is 47.

The square root of 6861668123 is about 82835.1865030797. The cubic root of 6861668123 is about 1900.2463321433.

The spelling of 6861668123 in words is "six billion, eight hundred sixty-one million, six hundred sixty-eight thousand, one hundred twenty-three".