123146636143 has 4 divisors (see below), whose sum is σ = 123151156480. Its totient is φ = 123142115808.

The previous prime is 123146636111. The next prime is 123146636189. The reversal of 123146636143 is 341636641321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123146636143 - 2⁵ = 123146636111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123146636096 and 123146636105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123146636443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219055 + ... + 2273872.

It is an arithmetic number, because the mean of its divisors is an integer number (30787789120).

Almost surely, 2^123146636143 is an apocalyptic number.

123146636143 is a deficient number, since it is larger than the sum of its proper divisors (4520337).

123146636143 is an equidigital number, since it uses as much as digits as its factorization.

123146636143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520336.

The product of its digits is 186624, while the sum is 40.

The spelling of 123146636143 in words is "one hundred twenty-three billion, one hundred forty-six million, six hundred thirty-six thousand, one hundred forty-three".