161143754617 has 8 divisors (see below), whose sum is σ = 169698513600. Its totient is φ = 152596346544.

The previous prime is 161143754599. The next prime is 161143754621. The reversal of 161143754617 is 716457341161.

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 161143754617 - 2⁷ = 161143754489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161143754687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1792693 + ... + 1880434.

It is an arithmetic number, because the mean of its divisors is an integer number (21212314200).

Almost surely, 2^161143754617 is an apocalyptic number.

It is an amenable number.

161143754617 is a deficient number, since it is larger than the sum of its proper divisors (8554758983).

161143754617 is a wasteful number, since it uses less digits than its factorization.

161143754617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675455.

The product of its digits is 423360, while the sum is 46.

The spelling of 161143754617 in words is "one hundred sixty-one billion, one hundred forty-three million, seven hundred fifty-four thousand, six hundred seventeen".