161469964161 has 32 divisors (see below), whose sum is σ = 262689853440. Its totient is φ = 97212474000.

The previous prime is 161469964153. The next prime is 161469964199.

161469964161 is a `hidden beast` number, since 1 + 61 + 469 + 9 + 64 + 1 + 61 = 666.

161469964161 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 161469964161 - 2³ = 161469964153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161469964098 and 161469964107.

It is not an unprimeable number, because it can be changed into a prime (161469964261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1755385 + ... + 1845078.

It is an arithmetic number, because the mean of its divisors is an integer number (8209057920).

Almost surely, 2^161469964161 is an apocalyptic number.

161469964161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161469964161 is a deficient number, since it is larger than the sum of its proper divisors (101219889279).

161469964161 is a wasteful number, since it uses less digits than its factorization.

161469964161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600634 (or 3600628 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 161469964161 in words is "one hundred sixty-one billion, four hundred sixty-nine million, nine hundred sixty-four thousand, one hundred sixty-one".