161043453372111 has 8 divisors (see below), whose sum is σ = 214729709740464. Its totient is φ = 107359749625920.

The previous prime is 161043453372103. The next prime is 161043453372143. The reversal of 161043453372111 is 111273354340161.

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

It is not a de Polignac number, because 161043453372111 - 2³ = 161043453372103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161043453372511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638008326 + ... + 638260691.

It is an arithmetic number, because the mean of its divisors is an integer number (26841213717558).

Almost surely, 2^{161043453372111} is an apocalyptic number.

161043453372111 is a deficient number, since it is larger than the sum of its proper divisors (53686256368353).

161043453372111 is a wasteful number, since it uses less digits than its factorization.

161043453372111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276311081.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 161043453372111 in words is "one hundred sixty-one trillion, forty-three billion, four hundred fifty-three million, three hundred seventy-two thousand, one hundred eleven".