12654566265 has 64 divisors (see below), whose sum is σ = 22837469184. Its totient is φ = 5928000000.

The previous prime is 12654566261. The next prime is 12654566297. The reversal of 12654566265 is 56266545621.

It is not a de Polignac number, because 12654566265 - 2² = 12654566261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12654566261) 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 63 ways as a sum of consecutive naturals, for example, 3890890 + ... + 3894140.

It is an arithmetic number, because the mean of its divisors is an integer number (356835456).

Almost surely, 2^12654566265 is an apocalyptic number.

12654566265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12654566265 is a deficient number, since it is larger than the sum of its proper divisors (10182902919).

12654566265 is a wasteful number, since it uses less digits than its factorization.

12654566265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062.

The product of its digits is 2592000, while the sum is 48.

It can be divided in two parts, 1265456 and 6265, that added together give a palindrome (1271721).

The spelling of 12654566265 in words is "twelve billion, six hundred fifty-four million, five hundred sixty-six thousand, two hundred sixty-five".