12712266505 has 16 divisors (see below), whose sum is σ = 15592621824. Its totient is φ = 9945782080.

The previous prime is 12712266499. The next prime is 12712266533. The reversal of 12712266505 is 50566221721.

It is not a de Polignac number, because 12712266505 - 2²³ = 12703877897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5292 + ... + 159538.

It is an arithmetic number, because the mean of its divisors is an integer number (974538864).

Almost surely, 2^12712266505 is an apocalyptic number.

It is an amenable number.

12712266505 is a deficient number, since it is larger than the sum of its proper divisors (2880355319).

12712266505 is a wasteful number, since it uses less digits than its factorization.

12712266505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154616.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 12712266505 in words is "twelve billion, seven hundred twelve million, two hundred sixty-six thousand, five hundred five".