29127366161 has 4 divisors (see below), whose sum is σ = 29128951332. Its totient is φ = 29125780992.

The previous prime is 29127366139. The next prime is 29127366197. The reversal of 29127366161 is 16166372192.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18426705025 + 10700661136 = 135745^2 + 103444^2 .

It is a cyclic number.

It is not a de Polignac number, because 29127366161 - 2²⁶ = 29060257297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29127366131) 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, 764696 + ... + 801881.

It is an arithmetic number, because the mean of its divisors is an integer number (7282237833).

Almost surely, 2^29127366161 is an apocalyptic number.

It is an amenable number.

29127366161 is a deficient number, since it is larger than the sum of its proper divisors (1585171).

29127366161 is a wasteful number, since it uses less digits than its factorization.

29127366161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585170.

The product of its digits is 163296, while the sum is 44.

The spelling of 29127366161 in words is "twenty-nine billion, one hundred twenty-seven million, three hundred sixty-six thousand, one hundred sixty-one".