12662775841 has 9 divisors (see below), whose sum is σ = 12775048113. Its totient is φ = 12551484660.

The previous prime is 12662775803. The next prime is 12662775863. The reversal of 12662775841 is 14857726621.

The square root of 12662775841 is 112529.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 12662775841 - 2²⁹ = 12125904929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12662775241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14740870 + ... + 14741728.

Almost surely, 2^12662775841 is an apocalyptic number.

12662775841 is the 112529-th square number.

12662775841 is the 56265-th centered octagonal number.

It is an amenable number.

12662775841 is a deficient number, since it is larger than the sum of its proper divisors (112272272).

12662775841 is an frugal number, since it uses more digits than its factorization.

12662775841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 990 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

Multiplying 12662775841 by its sum of digits (49), we get a square (620476016209 = 787703²).

The spelling of 12662775841 in words is "twelve billion, six hundred sixty-two million, seven hundred seventy-five thousand, eight hundred forty-one".