11134763721 has 6 divisors (see below), whose sum is σ = 16083547610. Its totient is φ = 7423175808.

The previous prime is 11134763681. The next prime is 11134763767. The reversal of 11134763721 is 12736743111.

It is a happy number.

11134763721 is a `hidden beast` number, since 1 + 1 + 13 + 4 + 7 + 637 + 2 + 1 = 666.

11134763721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8147048121 + 2987715600 = 90261^2 + 54660^2 .

It is not a de Polignac number, because 11134763721 - 2¹⁹ = 11134239433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11134764721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618597976 + ... + 618597993.

Almost surely, 2^11134763721 is an apocalyptic number.

It is an amenable number.

11134763721 is a deficient number, since it is larger than the sum of its proper divisors (4948783889).

11134763721 is a wasteful number, since it uses less digits than its factorization.

11134763721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237195975 (or 1237195972 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The spelling of 11134763721 in words is "eleven billion, one hundred thirty-four million, seven hundred sixty-three thousand, seven hundred twenty-one".