123329981699 has 4 divisors (see below), whose sum is σ = 123331293480. Its totient is φ = 123328669920.

The previous prime is 123329981693. The next prime is 123329981729. The reversal of 123329981699 is 996189923321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123329981699 - 2¹⁶ = 123329916163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123329981693) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 502982 + ... + 706859.

It is an arithmetic number, because the mean of its divisors is an integer number (30832823370).

Almost surely, 2^123329981699 is an apocalyptic number.

123329981699 is a deficient number, since it is larger than the sum of its proper divisors (1311781).

123329981699 is a wasteful number, since it uses less digits than its factorization.

123329981699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311780.

The product of its digits is 11337408, while the sum is 62.

The spelling of 123329981699 in words is "one hundred twenty-three billion, three hundred twenty-nine million, nine hundred eighty-one thousand, six hundred ninety-nine".