161185419453 has 8 divisors (see below), whose sum is σ = 214977622048. Its totient is φ = 107425081584.

The previous prime is 161185419431. The next prime is 161185419457. The reversal of 161185419453 is 354914581161.

161185419453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161185419453 - 2⁹ = 161185418941 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 (161185419457) 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 7 ways as a sum of consecutive naturals, for example, 7954375 + ... + 7974612.

It is an arithmetic number, because the mean of its divisors is an integer number (26872202756).

Almost surely, 2^161185419453 is an apocalyptic number.

It is an amenable number.

161185419453 is a deficient number, since it is larger than the sum of its proper divisors (53792202595).

161185419453 is a wasteful number, since it uses less digits than its factorization.

161185419453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15932363.

The product of its digits is 518400, while the sum is 48.

The spelling of 161185419453 in words is "one hundred sixty-one billion, one hundred eighty-five million, four hundred nineteen thousand, four hundred fifty-three".