161031351469 has 8 divisors (see below), whose sum is σ = 163447038560. Its totient is φ = 158616024336.

The previous prime is 161031351451. The next prime is 161031351473. The reversal of 161031351469 is 964153130161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161031351469 - 2²¹ = 161029254317 is a prime.

It is a super-2 number, since 2×161031351469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161031351479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891022 + ... + 1056400.

It is an arithmetic number, because the mean of its divisors is an integer number (20430879820).

Almost surely, 2^161031351469 is an apocalyptic number.

It is an amenable number.

161031351469 is a deficient number, since it is larger than the sum of its proper divisors (2415687091).

161031351469 is a wasteful number, since it uses less digits than its factorization.

161031351469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179979.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 161031351469 in words is "one hundred sixty-one billion, thirty-one million, three hundred fifty-one thousand, four hundred sixty-nine".