123836513803 has 8 divisors (see below), whose sum is σ = 124209645696. Its totient is φ = 123463915200.

The previous prime is 123836513789. The next prime is 123836513839. The reversal of 123836513803 is 308315638321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123836513803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123836513803.

It is not an unprimeable number, because it can be changed into a prime (123836513903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334263 + ... + 599503.

It is an arithmetic number, because the mean of its divisors is an integer number (15526205712).

Almost surely, 2^123836513803 is an apocalyptic number.

123836513803 is a deficient number, since it is larger than the sum of its proper divisors (373131893).

123836513803 is an equidigital number, since it uses as much as digits as its factorization.

123836513803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266645.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 123836513803 in words is "one hundred twenty-three billion, eight hundred thirty-six million, five hundred thirteen thousand, eight hundred three".