123422688688 has 80 divisors (see below), whose sum is σ = 272508558336. Its totient is φ = 53720029440.

The previous prime is 123422688671. The next prime is 123422688731. The reversal of 123422688688 is 886886224321.

It is a super-2 number, since 2×123422688688² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157981 + ... + 521347.

Almost surely, 2^123422688688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123422688688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136254279168).

123422688688 is an abundant number, since it is smaller than the sum of its proper divisors (149085869648).

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

123422688688 is a wasteful number, since it uses less digits than its factorization.

123422688688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363482 (or 363476 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 58.

The spelling of 123422688688 in words is "one hundred twenty-three billion, four hundred twenty-two million, six hundred eighty-eight thousand, six hundred eighty-eight".