11365294881 has 4 divisors (see below), whose sum is σ = 15153726512. Its totient is φ = 7576863252.

The previous prime is 11365294879. The next prime is 11365294891. The reversal of 11365294881 is 18849256311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11365294881 - 2¹ = 11365294879 is a prime.

It is a super-2 number, since 2×11365294881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11365294881.

It is not an unprimeable number, because it can be changed into a prime (11365294861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894215811 + ... + 1894215816.

It is an arithmetic number, because the mean of its divisors is an integer number (3788431628).

Almost surely, 2^11365294881 is an apocalyptic number.

It is an amenable number.

11365294881 is a deficient number, since it is larger than the sum of its proper divisors (3788431631).

11365294881 is an equidigital number, since it uses as much as digits as its factorization.

11365294881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788431630.

The product of its digits is 414720, while the sum is 48.

The spelling of 11365294881 in words is "eleven billion, three hundred sixty-five million, two hundred ninety-four thousand, eight hundred eighty-one".