12328990765 has 16 divisors (see below), whose sum is σ = 18208971648. Its totient is φ = 7803844416.

The previous prime is 12328990711. The next prime is 12328990787. The reversal of 12328990765 is 56709982321.

It is a cyclic number.

It is not a de Polignac number, because 12328990765 - 2²³ = 12320602157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13547887 + ... + 13548796.

It is an arithmetic number, because the mean of its divisors is an integer number (1138060728).

Almost surely, 2^12328990765 is an apocalyptic number.

It is an amenable number.

12328990765 is a deficient number, since it is larger than the sum of its proper divisors (5879980883).

12328990765 is a wasteful number, since it uses less digits than its factorization.

12328990765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27096708.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 12328990765 in words is "twelve billion, three hundred twenty-eight million, nine hundred ninety thousand, seven hundred sixty-five".