123623423055 has 48 divisors (see below), whose sum is σ = 233822744064. Its totient is φ = 59922709440.

The previous prime is 123623423029. The next prime is 123623423087. The reversal of 123623423055 is 550324326321.

123623423055 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 2 + 342 + 305 + 5 = 666.

It is not a de Polignac number, because 123623423055 - 2⁶ = 123623422991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1952302 + ... + 2014628.

It is an arithmetic number, because the mean of its divisors is an integer number (4871307168).

Almost surely, 2^123623423055 is an apocalyptic number.

123623423055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123623423055 is a deficient number, since it is larger than the sum of its proper divisors (110199321009).

123623423055 is a wasteful number, since it uses less digits than its factorization.

123623423055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66356 (or 66353 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 123623423055 its reverse (550324326321), we get a palindrome (673947749376).

The spelling of 123623423055 in words is "one hundred twenty-three billion, six hundred twenty-three million, four hundred twenty-three thousand, fifty-five".