12239055951 has 4 divisors (see below), whose sum is σ = 16318741272. Its totient is φ = 8159370632.

The previous prime is 12239055947. The next prime is 12239056003. The reversal of 12239055951 is 15955093221.

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

It is a cyclic number.

It is not a de Polignac number, because 12239055951 - 2² = 12239055947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12239055551) 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, 2039842656 + ... + 2039842661.

It is an arithmetic number, because the mean of its divisors is an integer number (4079685318).

Almost surely, 2^12239055951 is an apocalyptic number.

12239055951 is a deficient number, since it is larger than the sum of its proper divisors (4079685321).

12239055951 is an equidigital number, since it uses as much as digits as its factorization.

12239055951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079685320.

The product of its (nonzero) digits is 121500, while the sum is 42.

The spelling of 12239055951 in words is "twelve billion, two hundred thirty-nine million, fifty-five thousand, nine hundred fifty-one".