28114160161 has 4 divisors (see below), whose sum is σ = 28115424432. Its totient is φ = 28112895892.

The previous prime is 28114160149. The next prime is 28114160167. The reversal of 28114160161 is 16106141182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16106141182 = 2 ⋅8053070591.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28114160161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28114160167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598171 + ... + 643456.

It is an arithmetic number, because the mean of its divisors is an integer number (7028856108).

Almost surely, 2^28114160161 is an apocalyptic number.

It is an amenable number.

28114160161 is a deficient number, since it is larger than the sum of its proper divisors (1264271).

28114160161 is a wasteful number, since it uses less digits than its factorization.

28114160161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264270.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 28114160161 in words is "twenty-eight billion, one hundred fourteen million, one hundred sixty thousand, one hundred sixty-one".