12784131284 has 12 divisors (see below), whose sum is σ = 22380745044. Its totient is φ = 6389632704.

The previous prime is 12784131281. The next prime is 12784131287. The reversal of 12784131284 is 48213148721.

It is an interprime number because it is at equal distance from previous prime (12784131281) and next prime (12784131287).

It can be written as a sum of positive squares in 2 ways, for example, as 4176002884 + 8608128400 = 64622^2 + 92780^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12784131281) 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, 596387 + ... + 617450.

It is an arithmetic number, because the mean of its divisors is an integer number (1865062087).

Almost surely, 2^12784131284 is an apocalyptic number.

It is an amenable number.

12784131284 is a deficient number, since it is larger than the sum of its proper divisors (9596613760).

12784131284 is a wasteful number, since it uses less digits than its factorization.

12784131284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216474 (or 1216472 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The spelling of 12784131284 in words is "twelve billion, seven hundred eighty-four million, one hundred thirty-one thousand, two hundred eighty-four".