12109645851 has 8 divisors (see below), whose sum is σ = 16210522944. Its totient is φ = 8040933000.

The previous prime is 12109645837. The next prime is 12109645871. The reversal of 12109645851 is 15854690121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12109645851 - 2⁶ = 12109645787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12109645871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8040181 + ... + 8041686.

It is an arithmetic number, because the mean of its divisors is an integer number (2026315368).

Almost surely, 2^12109645851 is an apocalyptic number.

12109645851 is a deficient number, since it is larger than the sum of its proper divisors (4100877093).

12109645851 is a wasteful number, since it uses less digits than its factorization.

12109645851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16082121.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 12109645851 in words is "twelve billion, one hundred nine million, six hundred forty-five thousand, eight hundred fifty-one".