161343001145 has 8 divisors (see below), whose sum is σ = 194242259904. Its totient is φ = 128653961904.

The previous prime is 161343001129. The next prime is 161343001159. The reversal of 161343001145 is 541100343161.

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 161343001145 - 2⁴ = 161343001129 is a prime.

It is a super-2 number, since 2×161343001145² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52553189 + ... + 52556258.

It is an arithmetic number, because the mean of its divisors is an integer number (24280282488).

Almost surely, 2^161343001145 is an apocalyptic number.

It is an amenable number.

161343001145 is a deficient number, since it is larger than the sum of its proper divisors (32899258759).

161343001145 is a wasteful number, since it uses less digits than its factorization.

161343001145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105109759.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 161343001145 in words is "one hundred sixty-one billion, three hundred forty-three million, one thousand, one hundred forty-five".