161004454311 has 4 divisors (see below), whose sum is σ = 214672605752. Its totient is φ = 107336302872.

The previous prime is 161004454309. The next prime is 161004454313. The reversal of 161004454311 is 113454400161.

161004454311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (161004454309) and next prime (161004454313).

It is not a de Polignac number, because 161004454311 - 2¹ = 161004454309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161004454313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26834075716 + ... + 26834075721.

It is an arithmetic number, because the mean of its divisors is an integer number (53668151438).

Almost surely, 2^161004454311 is an apocalyptic number.

161004454311 is a deficient number, since it is larger than the sum of its proper divisors (53668151441).

161004454311 is an equidigital number, since it uses as much as digits as its factorization.

161004454311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53668151440.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 161004454311 its reverse (113454400161), we get a palindrome (274458854472).

The spelling of 161004454311 in words is "one hundred sixty-one billion, four million, four hundred fifty-four thousand, three hundred eleven".