123666516241 has 8 divisors (see below), whose sum is σ = 129472217280. Its totient is φ = 117963571152.

The previous prime is 123666516227. The next prime is 123666516257. The reversal of 123666516241 is 142615666321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123666516241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123666516221) 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, 25686525 + ... + 25691338.

It is an arithmetic number, because the mean of its divisors is an integer number (16184027160).

Almost surely, 2^123666516241 is an apocalyptic number.

It is an amenable number.

123666516241 is a deficient number, since it is larger than the sum of its proper divisors (5805701039).

123666516241 is an equidigital number, since it uses as much as digits as its factorization.

123666516241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51377975.

The product of its digits is 311040, while the sum is 43.

The spelling of 123666516241 in words is "one hundred twenty-three billion, six hundred sixty-six million, five hundred sixteen thousand, two hundred forty-one".