12626772661 has 8 divisors (see below), whose sum is σ = 13458066624. Its totient is φ = 11805316800.

The previous prime is 12626772569. The next prime is 12626772679. The reversal of 12626772661 is 16627762621.

12626772661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12626772661 - 2¹¹ = 12626770613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12626772761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456875 + ... + 2462008.

It is an arithmetic number, because the mean of its divisors is an integer number (1682258328).

Almost surely, 2^12626772661 is an apocalyptic number.

It is an amenable number.

12626772661 is a deficient number, since it is larger than the sum of its proper divisors (831293963).

12626772661 is a wasteful number, since it uses less digits than its factorization.

12626772661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919051.

The product of its digits is 508032, while the sum is 46.

The spelling of 12626772661 in words is "twelve billion, six hundred twenty-six million, seven hundred seventy-two thousand, six hundred sixty-one".