12135011979 has 8 divisors (see below), whose sum is σ = 17031595840. Its totient is φ = 7664218056.

The previous prime is 12135011963. The next prime is 12135012007. The reversal of 12135011979 is 97911053121.

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

It is not a de Polignac number, because 12135011979 - 2⁴ = 12135011963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12135019979) 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, 106447417 + ... + 106447530.

It is an arithmetic number, because the mean of its divisors is an integer number (2128949480).

Almost surely, 2^12135011979 is an apocalyptic number.

12135011979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12135011979 is a deficient number, since it is larger than the sum of its proper divisors (4896583861).

12135011979 is a wasteful number, since it uses less digits than its factorization.

12135011979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212894969.

The product of its (nonzero) digits is 17010, while the sum is 39.

The spelling of 12135011979 in words is "twelve billion, one hundred thirty-five million, eleven thousand, nine hundred seventy-nine".