11481406559 has 32 divisors (see below), whose sum is σ = 13839621120. Its totient is φ = 9317290752.

The previous prime is 11481406553. The next prime is 11481406561. The reversal of 11481406559 is 95560418411.

It is not a de Polignac number, because 11481406559 - 2²⁰ = 11480357983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11481406553) 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, 3167222 + ... + 3170844.

It is an arithmetic number, because the mean of its divisors is an integer number (432488160).

Almost surely, 2^11481406559 is an apocalyptic number.

11481406559 is a deficient number, since it is larger than the sum of its proper divisors (2358214561).

11481406559 is a wasteful number, since it uses less digits than its factorization.

11481406559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 11481406559 in words is "eleven billion, four hundred eighty-one million, four hundred six thousand, five hundred fifty-nine".