123695981612 has 48 divisors (see below), whose sum is σ = 257811993600. Its totient is φ = 51884609616.

The previous prime is 123695981609. The next prime is 123695981623. The reversal of 123695981612 is 216189596321.

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 15 ways as a sum of consecutive naturals, for example, 894638 + ... + 1023605.

It is an arithmetic number, because the mean of its divisors is an integer number (5371083200).

Almost surely, 2^123695981612 is an apocalyptic number.

It is an amenable number.

123695981612 is an abundant number, since it is smaller than the sum of its proper divisors (134116011988).

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

123695981612 is a wasteful number, since it uses less digits than its factorization.

123695981612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918315 (or 1918299 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 53.

The spelling of 123695981612 in words is "one hundred twenty-three billion, six hundred ninety-five million, nine hundred eighty-one thousand, six hundred twelve".