12611001265 has 8 divisors (see below), whose sum is σ = 15147885888. Its totient is φ = 10079011440.

The previous prime is 12611001209. The next prime is 12611001287. The reversal of 12611001265 is 56210011621.

It is a happy number.

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

It is not a de Polignac number, because 12611001265 - 2¹¹ = 12610999217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218027 + ... + 1228336.

It is an arithmetic number, because the mean of its divisors is an integer number (1893485736).

Almost surely, 2^12611001265 is an apocalyptic number.

It is an amenable number.

12611001265 is a deficient number, since it is larger than the sum of its proper divisors (2536884623).

12611001265 is a wasteful number, since it uses less digits than its factorization.

12611001265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447399.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 12611001265 its reverse (56210011621), we get a palindrome (68821012886).

The spelling of 12611001265 in words is "twelve billion, six hundred eleven million, one thousand, two hundred sixty-five".