15611155161 has 32 divisors (see below), whose sum is σ = 24120729600. Its totient is φ = 8796340800.

The previous prime is 15611155151. The next prime is 15611155187. The reversal of 15611155161 is 16155111651.

It is not a de Polignac number, because 15611155161 - 2¹¹ = 15611153113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15611155111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1369636 + ... + 1380986.

It is an arithmetic number, because the mean of its divisors is an integer number (753772800).

Almost surely, 2^15611155161 is an apocalyptic number.

It is an amenable number.

15611155161 is a deficient number, since it is larger than the sum of its proper divisors (8509574439).

15611155161 is a wasteful number, since it uses less digits than its factorization.

15611155161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12269.

The product of its digits is 4500, while the sum is 33.

The spelling of 15611155161 in words is "fifteen billion, six hundred eleven million, one hundred fifty-five thousand, one hundred sixty-one".