161477266161 has 4 divisors (see below), whose sum is σ = 215303021552. Its totient is φ = 107651510772.

The previous prime is 161477266151. The next prime is 161477266207. The reversal of 161477266161 is 161662774161.

161477266161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 161477266161 - 2⁷ = 161477266033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161477266161.

It is not an unprimeable number, because it can be changed into a prime (161477266151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26912877691 + ... + 26912877696.

It is an arithmetic number, because the mean of its divisors is an integer number (53825755388).

Almost surely, 2^161477266161 is an apocalyptic number.

It is an amenable number.

161477266161 is a deficient number, since it is larger than the sum of its proper divisors (53825755391).

161477266161 is an equidigital number, since it uses as much as digits as its factorization.

161477266161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53825755390.

The product of its digits is 508032, while the sum is 48.

The spelling of 161477266161 in words is "one hundred sixty-one billion, four hundred seventy-seven million, two hundred sixty-six thousand, one hundred sixty-one".