16115611161 has 16 divisors (see below), whose sum is σ = 23146678016. Its totient is φ = 9914593536.

The previous prime is 16115611153. The next prime is 16115611219. The reversal of 16115611161 is 16111651161.

It is not a de Polignac number, because 16115611161 - 2³ = 16115611153 is a prime.

It is a super-3 number, since 3×16115611161³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16115611861) 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, 93456 + ... + 202398.

It is an arithmetic number, because the mean of its divisors is an integer number (1446667376).

Almost surely, 2^16115611161 is an apocalyptic number.

It is an amenable number.

16115611161 is a deficient number, since it is larger than the sum of its proper divisors (7031066855).

16115611161 is a wasteful number, since it uses less digits than its factorization.

16115611161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112752.

The product of its digits is 1080, while the sum is 30.

The spelling of 16115611161 in words is "sixteen billion, one hundred fifteen million, six hundred eleven thousand, one hundred sixty-one".