12439236951 has 12 divisors (see below), whose sum is σ = 18235963512. Its totient is φ = 8169050736.

The previous prime is 12439236949. The next prime is 12439236961. The reversal of 12439236951 is 15963293421.

It is not a de Polignac number, because 12439236951 - 2¹ = 12439236949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12439236897 and 12439236906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12439236911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10313856 + ... + 10315061.

It is an arithmetic number, because the mean of its divisors is an integer number (1519663626).

Almost surely, 2^12439236951 is an apocalyptic number.

12439236951 is a deficient number, since it is larger than the sum of its proper divisors (5796726561).

12439236951 is a wasteful number, since it uses less digits than its factorization.

12439236951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20628990 (or 20628987 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The spelling of 12439236951 in words is "twelve billion, four hundred thirty-nine million, two hundred thirty-six thousand, nine hundred fifty-one".