123213166643 has 8 divisors (see below), whose sum is σ = 142209256800. Its totient is φ = 104565628800.

The previous prime is 123213166619. The next prime is 123213166691. The reversal of 123213166643 is 346661312321.

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 123213166643 - 2⁶ = 123213166579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123213166597 and 123213166606.

It is not an unprimeable number, because it can be changed into a prime (123213166343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87137318 + ... + 87138731.

It is an arithmetic number, because the mean of its divisors is an integer number (17776157100).

Almost surely, 2^123213166643 is an apocalyptic number.

123213166643 is a deficient number, since it is larger than the sum of its proper divisors (18996090157).

123213166643 is a wasteful number, since it uses less digits than its factorization.

123213166643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174276157.

The product of its digits is 93312, while the sum is 38.

Adding to 123213166643 its reverse (346661312321), we get a palindrome (469874478964).

The spelling of 123213166643 in words is "one hundred twenty-three billion, two hundred thirteen million, one hundred sixty-six thousand, six hundred forty-three".