161533176441 has 16 divisors (see below), whose sum is σ = 265080084864. Its totient is φ = 85204312704.

The previous prime is 161533176419. The next prime is 161533176443. The reversal of 161533176441 is 144671335161.

It is not a de Polignac number, because 161533176441 - 2¹³ = 161533168249 is a prime.

It is a super-2 number, since 2×161533176441² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161533176393 and 161533176402.

It is not an unprimeable number, because it can be changed into a prime (161533176443) 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 15 ways as a sum of consecutive naturals, for example, 295848036 + ... + 295848581.

It is an arithmetic number, because the mean of its divisors is an integer number (16567505304).

Almost surely, 2^161533176441 is an apocalyptic number.

It is an amenable number.

161533176441 is a deficient number, since it is larger than the sum of its proper divisors (103546908423).

161533176441 is a wasteful number, since it uses less digits than its factorization.

161533176441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591696640.

The product of its digits is 181440, while the sum is 42.

The spelling of 161533176441 in words is "one hundred sixty-one billion, five hundred thirty-three million, one hundred seventy-six thousand, four hundred forty-one".