11161560111 has 8 divisors (see below), whose sum is σ = 16026855600. Its totient is φ = 6868652352.

The previous prime is 11161560101. The next prime is 11161560131. The reversal of 11161560111 is 11106516111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11161560111 - 2⁹ = 11161559599 is a prime.

It is a super-2 number, since 2×11161560111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161560101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143096886 + ... + 143096963.

It is an arithmetic number, because the mean of its divisors is an integer number (2003356950).

Almost surely, 2^11161560111 is an apocalyptic number.

11161560111 is a deficient number, since it is larger than the sum of its proper divisors (4865295489).

11161560111 is a wasteful number, since it uses less digits than its factorization.

11161560111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286193865.

The product of its (nonzero) digits is 180, while the sum is 24.

The spelling of 11161560111 in words is "eleven billion, one hundred sixty-one million, five hundred sixty thousand, one hundred eleven".