12651400265 has 16 divisors (see below), whose sum is σ = 17376152832. Its totient is φ = 8662415424.

The previous prime is 12651400193. The next prime is 12651400277. The reversal of 12651400265 is 56200415621.

It is a cyclic number.

It is not a de Polignac number, because 12651400265 - 2¹⁴ = 12651383881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243269 + ... + 290658.

It is an arithmetic number, because the mean of its divisors is an integer number (1086009552).

Almost surely, 2^12651400265 is an apocalyptic number.

It is an amenable number.

12651400265 is a deficient number, since it is larger than the sum of its proper divisors (4724752567).

12651400265 is an equidigital number, since it uses as much as digits as its factorization.

12651400265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534616.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 12651400265 its reverse (56200415621), we get a palindrome (68851815886).

The spelling of 12651400265 in words is "twelve billion, six hundred fifty-one million, four hundred thousand, two hundred sixty-five".