12000009976 has 16 divisors (see below), whose sum is σ = 23225826240. Its totient is φ = 5806456320.

The previous prime is 12000009961. The next prime is 12000009979. The reversal of 12000009976 is 67990000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000009979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24193321 + ... + 24193816.

It is an arithmetic number, because the mean of its divisors is an integer number (1451614140).

Almost surely, 2^12000009976 is an apocalyptic number.

It is an amenable number.

12000009976 is a deficient number, since it is larger than the sum of its proper divisors (11225816264).

12000009976 is a wasteful number, since it uses less digits than its factorization.

12000009976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48387174 (or 48387170 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

Adding to 12000009976 its reverse (67990000021), we get a palindrome (79990009997).

The spelling of 12000009976 in words is "twelve billion, nine thousand, nine hundred seventy-six".