123665143326 has 32 divisors (see below), whose sum is σ = 271667139840. Its totient is φ = 37354230144.

The previous prime is 123665143289. The next prime is 123665143331. The reversal of 123665143326 is 623341566321.

It is a congruent number.

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, 23579595 + ... + 23584838.

It is an arithmetic number, because the mean of its divisors is an integer number (8489598120).

Almost surely, 2^123665143326 is an apocalyptic number.

123665143326 is an abundant number, since it is smaller than the sum of its proper divisors (148001996514).

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

123665143326 is a wasteful number, since it uses less digits than its factorization.

123665143326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47164480.

The product of its digits is 466560, while the sum is 42.

The spelling of 123665143326 in words is "one hundred twenty-three billion, six hundred sixty-five million, one hundred forty-three thousand, three hundred twenty-six".