11555875969 has 16 divisors (see below), whose sum is σ = 12773617920. Its totient is φ = 10366162560.

The previous prime is 11555875931. The next prime is 11555875973. The reversal of 11555875969 is 96957855511.

It is a cyclic number.

It is not a de Polignac number, because 11555875969 - 2¹³ = 11555867777 is a prime.

It is a super-2 number, since 2×11555875969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11555875909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076739 + ... + 2082295.

It is an arithmetic number, because the mean of its divisors is an integer number (798351120).

Almost surely, 2^11555875969 is an apocalyptic number.

It is an amenable number.

11555875969 is a deficient number, since it is larger than the sum of its proper divisors (1217741951).

11555875969 is a wasteful number, since it uses less digits than its factorization.

11555875969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8040.

The product of its digits is 17010000, while the sum is 61.

The spelling of 11555875969 in words is "eleven billion, five hundred fifty-five million, eight hundred seventy-five thousand, nine hundred sixty-nine".