123823009645912 has 32 divisors (see below), whose sum is σ = 235068298315200. Its totient is φ = 61142085978624.

The previous prime is 123823009645883. The next prime is 123823009645949. The reversal of 123823009645912 is 219546900328321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246992112 + ... + 247492927.

It is an arithmetic number, because the mean of its divisors is an integer number (7345884322350).

Almost surely, 2^{123823009645912} is an apocalyptic number.

It is an amenable number.

123823009645912 is a deficient number, since it is larger than the sum of its proper divisors (111245288669288).

123823009645912 is a wasteful number, since it uses less digits than its factorization.

123823009645912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494485435 (or 494485431 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 123823009645912 in words is "one hundred twenty-three trillion, eight hundred twenty-three billion, nine million, six hundred forty-five thousand, nine hundred twelve".