11440481470781 has 16 divisors (see below), whose sum is σ = 12822453714240. Its totient is φ = 10115699806080.

The previous prime is 11440481470751. The next prime is 11440481470819. The reversal of 11440481470781 is 18707418404411.

It is a de Polignac number, because none of the positive numbers 2^k-11440481470781 is a prime.

It is a super-2 number, since 2×11440481470781² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11440481470741) 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, 3930851 + ... + 6191328.

It is an arithmetic number, because the mean of its divisors is an integer number (801403357140).

Almost surely, 2^{11440481470781} is an apocalyptic number.

11440481470781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11440481470781 is a deficient number, since it is larger than the sum of its proper divisors (1381972243459).

11440481470781 is a wasteful number, since it uses less digits than its factorization.

11440481470781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125004.

The product of its (nonzero) digits is 802816, while the sum is 50.

The spelling of 11440481470781 in words is "eleven trillion, four hundred forty billion, four hundred eighty-one million, four hundred seventy thousand, seven hundred eighty-one".