161143351552 has 36 divisors (see below), whose sum is σ = 321712199536. Its totient is φ = 80557908480.

The previous prime is 161143351547. The next prime is 161143351591. The reversal of 161143351552 is 255153341161.

It is a super-2 number, since 2×161143351552² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539343 + ... + 1640689.

Almost surely, 2^161143351552 is an apocalyptic number.

It is an amenable number.

161143351552 is a deficient number, since it is larger than the sum of its proper divisors (160568847984).

161143351552 is an equidigital number, since it uses as much as digits as its factorization.

161143351552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107574 (or 107560 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The spelling of 161143351552 in words is "one hundred sixty-one billion, one hundred forty-three million, three hundred fifty-one thousand, five hundred fifty-two".