123329661016 has 8 divisors (see below), whose sum is σ = 231243114420. Its totient is φ = 61664830504.

The previous prime is 123329660989. The next prime is 123329661017. The reversal of 123329661016 is 610166923321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 123329661016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123329661017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7708103806 + ... + 7708103821.

Almost surely, 2^123329661016 is an apocalyptic number.

It is an amenable number.

123329661016 is a deficient number, since it is larger than the sum of its proper divisors (107913453404).

123329661016 is a wasteful number, since it uses less digits than its factorization.

123329661016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15416207633 (or 15416207629 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 123329661016 in words is "one hundred twenty-three billion, three hundred twenty-nine million, six hundred sixty-one thousand, sixteen".