11421108385 has 48 divisors (see below), whose sum is σ = 15168247920. Its totient is φ = 8224727040.

The previous prime is 11421108371. The next prime is 11421108397. The reversal of 11421108385 is 58380112411.

It can be written as a sum of positive squares in 24 ways, for example, as 633377889 + 10787730496 = 25167^2 + 103864^2 .

It is not a de Polignac number, because 11421108385 - 2²³ = 11412719777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11421108385.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7097461 + ... + 7099069.

It is an arithmetic number, because the mean of its divisors is an integer number (316005165).

Almost surely, 2^11421108385 is an apocalyptic number.

It is an amenable number.

11421108385 is a deficient number, since it is larger than the sum of its proper divisors (3747139535).

11421108385 is a wasteful number, since it uses less digits than its factorization.

11421108385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The spelling of 11421108385 in words is "eleven billion, four hundred twenty-one million, one hundred eight thousand, three hundred eighty-five".