123403745836 has 24 divisors (see below), whose sum is σ = 247977207296. Its totient is φ = 52636666320.

The previous prime is 123403745827. The next prime is 123403745873. The reversal of 123403745836 is 638547304321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10437876 + ... + 10449691.

Almost surely, 2^123403745836 is an apocalyptic number.

It is an amenable number.

123403745836 is an abundant number, since it is smaller than the sum of its proper divisors (124573461460).

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

123403745836 is a wasteful number, since it uses less digits than its factorization.

123403745836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20887789 (or 20887787 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 123403745836 in words is "one hundred twenty-three billion, four hundred three million, seven hundred forty-five thousand, eight hundred thirty-six".