111715017161 has 16 divisors (see below), whose sum is σ = 125845843968. Its totient is φ = 98248947600.

The previous prime is 111715017143. The next prime is 111715017191. The reversal of 111715017161 is 161710517111.

It is a cyclic number.

It is not a de Polignac number, because 111715017161 - 2¹⁰ = 111715016137 is a prime.

It is a super-4 number, since 4×111715017161⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111715017191) 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, 955100 + ... + 1065666.

It is an arithmetic number, because the mean of its divisors is an integer number (7865365248).

Almost surely, 2^111715017161 is an apocalyptic number.

111715017161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111715017161 is a deficient number, since it is larger than the sum of its proper divisors (14130826807).

111715017161 is a wasteful number, since it uses less digits than its factorization.

111715017161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113572.

The product of its (nonzero) digits is 1470, while the sum is 32.

It can be divided in two parts, 1117150 and 17161, that added together give a palindrome (1134311).

The spelling of 111715017161 in words is "one hundred eleven billion, seven hundred fifteen million, seventeen thousand, one hundred sixty-one".