11161937857 has 16 divisors (see below), whose sum is σ = 12922076160. Its totient is φ = 9443406672.

The previous prime is 11161937827. The next prime is 11161937909. The reversal of 11161937857 is 75873916111.

11161937857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11161937857 - 2³¹ = 9014454209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11161937857.

It is not an unprimeable number, because it can be changed into a prime (11161937827) 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 15 ways as a sum of consecutive naturals, for example, 667444 + ... + 683962.

It is an arithmetic number, because the mean of its divisors is an integer number (807629760).

Almost surely, 2^11161937857 is an apocalyptic number.

It is an amenable number.

11161937857 is a deficient number, since it is larger than the sum of its proper divisors (1760138303).

11161937857 is a wasteful number, since it uses less digits than its factorization.

11161937857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17772.

The product of its digits is 317520, while the sum is 49.

The spelling of 11161937857 in words is "eleven billion, one hundred sixty-one million, nine hundred thirty-seven thousand, eight hundred fifty-seven".