123673940398 has 8 divisors (see below), whose sum is σ = 189457951392. Its totient is φ = 60521289936.

The previous prime is 123673940381. The next prime is 123673940399. The reversal of 123673940398 is 893049376321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123673940399) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 657840015 + ... + 657840202.

It is an arithmetic number, because the mean of its divisors is an integer number (23682243924).

Almost surely, 2^123673940398 is an apocalyptic number.

123673940398 is a deficient number, since it is larger than the sum of its proper divisors (65784010994).

123673940398 is a wasteful number, since it uses less digits than its factorization.

123673940398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315680266.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 123673940398 in words is "one hundred twenty-three billion, six hundred seventy-three million, nine hundred forty thousand, three hundred ninety-eight".