161217776354 has 8 divisors (see below), whose sum is σ = 241837677648. Its totient is φ = 80605217140.

The previous prime is 161217776339. The next prime is 161217776417. The reversal of 161217776354 is 453677712161.

161217776354 is digitally balanced in base 3, 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780292 + ... + 1868655.

It is an arithmetic number, because the mean of its divisors is an integer number (30229709706).

Almost surely, 2^161217776354 is an apocalyptic number.

161217776354 is a deficient number, since it is larger than the sum of its proper divisors (80619901294).

161217776354 is a wasteful number, since it uses less digits than its factorization.

161217776354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671040.

The product of its digits is 1481760, while the sum is 50.

The spelling of 161217776354 in words is "one hundred sixty-one billion, two hundred seventeen million, seven hundred seventy-six thousand, three hundred fifty-four".