12655768972 has 144 divisors (see below), whose sum is σ = 29429729280. Its totient is φ = 4653792000.

The previous prime is 12655768969. The next prime is 12655768973. The reversal of 12655768972 is 27986755621.

It is not an unprimeable number, because it can be changed into a prime (12655768973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4304679 + ... + 4307617.

It is an arithmetic number, because the mean of its divisors is an integer number (204373120).

Almost surely, 2^12655768972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12655768972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14714864640).

12655768972 is an abundant number, since it is smaller than the sum of its proper divisors (16773960308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12655768972 is a wasteful number, since it uses less digits than its factorization.

12655768972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3031 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 58.

The spelling of 12655768972 in words is "twelve billion, six hundred fifty-five million, seven hundred sixty-eight thousand, nine hundred seventy-two".