123612442623 has 6 divisors (see below), whose sum is σ = 178551306024. Its totient is φ = 82408295076.

The previous prime is 123612442553. The next prime is 123612442687. The reversal of 123612442623 is 326244216321.

123612442623 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 1 + 24 + 4 + 2 + 623 = 666.

It is not a de Polignac number, because 123612442623 - 2⁸ = 123612442367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123612443623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6867357915 + ... + 6867357932.

It is an arithmetic number, because the mean of its divisors is an integer number (29758551004).

Almost surely, 2^123612442623 is an apocalyptic number.

123612442623 is a deficient number, since it is larger than the sum of its proper divisors (54938863401).

123612442623 is a wasteful number, since it uses less digits than its factorization.

123612442623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13734715853 (or 13734715850 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

Adding to 123612442623 its reverse (326244216321), we get a palindrome (449856658944).

The spelling of 123612442623 in words is "one hundred twenty-three billion, six hundred twelve million, four hundred forty-two thousand, six hundred twenty-three".