11501311113 has 6 divisors (see below), whose sum is σ = 16613004954. Its totient is φ = 7667540736.

The previous prime is 11501311099. The next prime is 11501311117. The reversal of 11501311113 is 31111310511.

It can be written as a sum of positive squares in only one way, i.e., 10868688009 + 632623104 = 104253^2 + 25152^2 .

It is not a de Polignac number, because 11501311113 - 2¹³ = 11501302921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11501311117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 638961720 + ... + 638961737.

It is an arithmetic number, because the mean of its divisors is an integer number (2768834159).

Almost surely, 2^11501311113 is an apocalyptic number.

It is an amenable number.

11501311113 is a deficient number, since it is larger than the sum of its proper divisors (5111693841).

11501311113 is a wasteful number, since it uses less digits than its factorization.

11501311113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277923463 (or 1277923460 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 18.

Adding to 11501311113 its reverse (31111310511), we get a palindrome (42612621624).

The spelling of 11501311113 in words is "eleven billion, five hundred one million, three hundred eleven thousand, one hundred thirteen".