12721366588 has 24 divisors (see below), whose sum is σ = 25455029600. Its totient is φ = 5449379328.

The previous prime is 12721366583. The next prime is 12721366589. The reversal of 12721366588 is 88566312721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12721366583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50253 + ... + 167236.

Almost surely, 2^12721366588 is an apocalyptic number.

It is an amenable number.

12721366588 is an abundant number, since it is smaller than the sum of its proper divisors (12733663012).

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

12721366588 is a wasteful number, since it uses less digits than its factorization.

12721366588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219589 (or 219587 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 12721366588 in words is "twelve billion, seven hundred twenty-one million, three hundred sixty-six thousand, five hundred eighty-eight".