161313357532 has 24 divisors (see below), whose sum is σ = 283330619264. Its totient is φ = 80361962352.

The previous prime is 161313357523. The next prime is 161313357577. The reversal of 161313357532 is 235753313161.

It is a super-2 number, since 2×161313357532² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3225703 + ... + 3275329.

Almost surely, 2^161313357532 is an apocalyptic number.

It is an amenable number.

161313357532 is a deficient number, since it is larger than the sum of its proper divisors (122017261732).

161313357532 is a wasteful number, since it uses less digits than its factorization.

161313357532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52585 (or 52583 counting only the distinct ones).

The product of its digits is 170100, while the sum is 40.

The spelling of 161313357532 in words is "one hundred sixty-one billion, three hundred thirteen million, three hundred fifty-seven thousand, five hundred thirty-two".