12080921697 has 24 divisors (see below), whose sum is σ = 18817705088. Its totient is φ = 7424460000.

The previous prime is 12080921693. The next prime is 12080921729. The reversal of 12080921697 is 79612908021.

It is not a de Polignac number, because 12080921697 - 2² = 12080921693 is a prime.

It is a super-3 number, since 3×12080921697³ (a number of 31 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12080921693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19122 + ... + 156612.

Almost surely, 2^12080921697 is an apocalyptic number.

It is an amenable number.

12080921697 is a deficient number, since it is larger than the sum of its proper divisors (6736783391).

12080921697 is a wasteful number, since it uses less digits than its factorization.

12080921697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138261 (or 138258 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 12080921697 in words is "twelve billion, eighty million, nine hundred twenty-one thousand, six hundred ninety-seven".