161893133629922 has 54 divisors (see below), whose sum is σ = 253122052988259. Its totient is φ = 77656613492160.

The previous prime is 161893133629907. The next prime is 161893133629933. The reversal of 161893133629922 is 229926331398161.

It can be written as a sum of positive squares in 5 ways, for example, as 150996393987481 + 10896739642441 = 12288059^2 + 3301021^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8997031.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48601959797 + ... + 48601963127.

Almost surely, 2^{161893133629922} is an apocalyptic number.

161893133629922 is a deficient number, since it is larger than the sum of its proper divisors (91228919358337).

161893133629922 is an frugal number, since it uses more digits than its factorization.

161893133629922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884 (or 3443 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 65.

The spelling of 161893133629922 in words is "one hundred sixty-one trillion, eight hundred ninety-three billion, one hundred thirty-three million, six hundred twenty-nine thousand, nine hundred twenty-two".