123423935064 has 32 divisors (see below), whose sum is σ = 308591971440. Its totient is φ = 41137027200.

The previous prime is 123423935051. The next prime is 123423935087. The reversal of 123423935064 is 460539324321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28147 + ... + 497634.

Almost surely, 2^123423935064 is an apocalyptic number.

It is an amenable number.

123423935064 is an abundant number, since it is smaller than the sum of its proper divisors (185168036376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123423935064 is a wasteful number, since it uses less digits than its factorization.

123423935064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535571 (or 535567 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 123423935064 in words is "one hundred twenty-three billion, four hundred twenty-three million, nine hundred thirty-five thousand, sixty-four".