14915981161 has 3 divisors (see below), whose sum is σ = 14916103293. Its totient is φ = 14915859030.

The previous prime is 14915981117. The next prime is 14915981167. The reversal of 14915981161 is 16118951941.

The square root of 14915981161 is 122131.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16118951941 = 29 ⋅555825929.

It is not a de Polignac number, because 14915981161 - 2¹⁹ = 14915456873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14915981167) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 61066 + ... + 183196.

It is an arithmetic number, because the mean of its divisors is an integer number (4972034431).

Almost surely, 2^14915981161 is an apocalyptic number.

14915981161 is the 122131-st square number.

14915981161 is the 61066-th centered octagonal number.

It is an amenable number.

14915981161 is a deficient number, since it is larger than the sum of its proper divisors (122132).

14915981161 is an frugal number, since it uses more digits than its factorization.

14915981161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244262 (or 122131 counting only the distinct ones).

The product of its digits is 77760, while the sum is 46.

The spelling of 14915981161 in words is "fourteen billion, nine hundred fifteen million, nine hundred eighty-one thousand, one hundred sixty-one".