123871718752 has 12 divisors (see below), whose sum is σ = 243872446356. Its totient is φ = 61935859360.

The previous prime is 123871718689. The next prime is 123871718779. The reversal of 123871718752 is 257817178321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123871718752.

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 as a sum of consecutive naturals, namely, 1935495574 + ... + 1935495637.

It is an arithmetic number, because the mean of its divisors is an integer number (20322703863).

Almost surely, 2^123871718752 is an apocalyptic number.

It is an amenable number.

123871718752 is a deficient number, since it is larger than the sum of its proper divisors (120000727604).

123871718752 is an equidigital number, since it uses as much as digits as its factorization.

123871718752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870991221 (or 3870991213 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 52.

The spelling of 123871718752 in words is "one hundred twenty-three billion, eight hundred seventy-one million, seven hundred eighteen thousand, seven hundred fifty-two".