161198184471 has 8 divisors (see below), whose sum is σ = 216249507840. Its totient is φ = 106806158712.

The previous prime is 161198184467. The next prime is 161198184541. The reversal of 161198184471 is 174481891161.

It is a happy number.

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

It is not a de Polignac number, because 161198184471 - 2² = 161198184467 is a prime.

It is a super-3 number, since 3×161198184471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161198184421) 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, 164823831 + ... + 164824808.

It is an arithmetic number, because the mean of its divisors is an integer number (27031188480).

Almost surely, 2^161198184471 is an apocalyptic number.

161198184471 is a deficient number, since it is larger than the sum of its proper divisors (55051323369).

161198184471 is a wasteful number, since it uses less digits than its factorization.

161198184471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329648805.

The product of its digits is 387072, while the sum is 51.

The spelling of 161198184471 in words is "one hundred sixty-one billion, one hundred ninety-eight million, one hundred eighty-four thousand, four hundred seventy-one".