11393898865 has 32 divisors (see below), whose sum is σ = 14621360544. Its totient is φ = 8493711360.

The previous prime is 11393898829. The next prime is 11393898869. The reversal of 11393898865 is 56889839311.

It can be written as a sum of positive squares in 16 ways, for example, as 527712784 + 10866186081 = 22972^2 + 104241^2 .

It is not a de Polignac number, because 11393898865 - 2²¹ = 11391801713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11393898869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5320695 + ... + 5322835.

It is an arithmetic number, because the mean of its divisors is an integer number (456917517).

Almost surely, 2^11393898865 is an apocalyptic number.

It is an amenable number.

11393898865 is a deficient number, since it is larger than the sum of its proper divisors (3227461679).

11393898865 is a wasteful number, since it uses less digits than its factorization.

11393898865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757.

The product of its digits is 11197440, while the sum is 61.

The spelling of 11393898865 in words is "eleven billion, three hundred ninety-three million, eight hundred ninety-eight thousand, eight hundred sixty-five".