12000179999 has 4 divisors (see below), whose sum is σ = 12631768440. Its totient is φ = 11368591560.

The previous prime is 12000179951. The next prime is 12000180047. The reversal of 12000179999 is 99997100021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12000179951) and next prime (12000180047).

It is a cyclic number.

It is not a de Polignac number, because 12000179999 - 2¹² = 12000175903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000179909) 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, 315794192 + ... + 315794229.

It is an arithmetic number, because the mean of its divisors is an integer number (3157942110).

Almost surely, 2^12000179999 is an apocalyptic number.

12000179999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12000179999 is a deficient number, since it is larger than the sum of its proper divisors (631588441).

12000179999 is an equidigital number, since it uses as much as digits as its factorization.

12000179999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631588440.

The product of its (nonzero) digits is 91854, while the sum is 47.

The spelling of 12000179999 in words is "twelve billion, one hundred seventy-nine thousand, nine hundred ninety-nine".