123791989396 has 12 divisors (see below), whose sum is σ = 216638761248. Its totient is φ = 61895200472.

The previous prime is 123791989369. The next prime is 123791989441. The reversal of 123791989396 is 693989197321.

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 3 ways as a sum of consecutive naturals, for example, 280635 + ... + 571261.

It is an arithmetic number, because the mean of its divisors is an integer number (18053230104).

Almost surely, 2^123791989396 is an apocalyptic number.

It is an amenable number.

123791989396 is a deficient number, since it is larger than the sum of its proper divisors (92846771852).

123791989396 is a wasteful number, since it uses less digits than its factorization.

123791989396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397118 (or 397116 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 67.

The spelling of 123791989396 in words is "one hundred twenty-three billion, seven hundred ninety-one million, nine hundred eighty-nine thousand, three hundred ninety-six".