11512031265 has 48 divisors (see below), whose sum is σ = 22924302336. Its totient is φ = 5235062400.

The previous prime is 11512031249. The next prime is 11512031269. The reversal of 11512031265 is 56213021511.

It is not a de Polignac number, because 11512031265 - 2⁴ = 11512031249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11512031269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35506 + ... + 155835.

It is an arithmetic number, because the mean of its divisors is an integer number (477589632).

Almost surely, 2^11512031265 is an apocalyptic number.

11512031265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11512031265 is a deficient number, since it is larger than the sum of its proper divisors (11412271071).

11512031265 is a wasteful number, since it uses less digits than its factorization.

11512031265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191550 (or 191547 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 11512031265 its reverse (56213021511), we get a palindrome (67725052776).

The spelling of 11512031265 in words is "eleven billion, five hundred twelve million, thirty-one thousand, two hundred sixty-five".