12784273879 has 12 divisors (see below), whose sum is σ = 13855924056. Its totient is φ = 11790129312.

The previous prime is 12784273867. The next prime is 12784273889. The reversal of 12784273879 is 97837248721.

It is not a de Polignac number, because 12784273879 - 2¹³ = 12784265687 is a prime.

It is a super-2 number, since 2×12784273879² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12784273889) 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, 154912 + ... + 222634.

It is an arithmetic number, because the mean of its divisors is an integer number (1154660338).

Almost surely, 2^12784273879 is an apocalyptic number.

12784273879 is a deficient number, since it is larger than the sum of its proper divisors (1071650177).

12784273879 is a wasteful number, since it uses less digits than its factorization.

12784273879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68866 (or 68853 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 58.

The spelling of 12784273879 in words is "twelve billion, seven hundred eighty-four million, two hundred seventy-three thousand, eight hundred seventy-nine".