11975271265 has 16 divisors (see below), whose sum is σ = 15144494400. Its totient is φ = 9065293632.

The previous prime is 11975271229. The next prime is 11975271293. The reversal of 11975271265 is 56217257911.

It is a cyclic number.

It is not a de Polignac number, because 11975271265 - 2⁷ = 11975271137 is a prime.

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, 7146 + ... + 154924.

It is an arithmetic number, because the mean of its divisors is an integer number (946530900).

Almost surely, 2^11975271265 is an apocalyptic number.

It is an amenable number.

11975271265 is a deficient number, since it is larger than the sum of its proper divisors (3169223135).

11975271265 is a wasteful number, since it uses less digits than its factorization.

11975271265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148656.

The product of its digits is 264600, while the sum is 46.

The spelling of 11975271265 in words is "eleven billion, nine hundred seventy-five million, two hundred seventy-one thousand, two hundred sixty-five".