11865172363 has 16 divisors (see below), whose sum is σ = 13250514816. Its totient is φ = 10531160640.

The previous prime is 11865172339. The next prime is 11865172379. The reversal of 11865172363 is 36327156811.

It is not a de Polignac number, because 11865172363 - 2²⁹ = 11328301451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (11865172393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1620156 + ... + 1627462.

It is an arithmetic number, because the mean of its divisors is an integer number (828157176).

Almost surely, 2^11865172363 is an apocalyptic number.

11865172363 is a deficient number, since it is larger than the sum of its proper divisors (1385342453).

11865172363 is a wasteful number, since it uses less digits than its factorization.

11865172363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10794.

The product of its digits is 181440, while the sum is 43.

The spelling of 11865172363 in words is "eleven billion, eight hundred sixty-five million, one hundred seventy-two thousand, three hundred sixty-three".