161198361567 has 12 divisors (see below), whose sum is σ = 245096924280. Its totient is φ = 101809491408.

The previous prime is 161198361547. The next prime is 161198361629. The reversal of 161198361567 is 765163891161.

161198361567 is a `hidden beast` number, since 1 + 6 + 1 + 19 + 8 + 3 + 61 + 567 = 666.

It is not a de Polignac number, because 161198361567 - 2¹¹ = 161198359519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161198361517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471340068 + ... + 471340409.

It is an arithmetic number, because the mean of its divisors is an integer number (20424743690).

Almost surely, 2^161198361567 is an apocalyptic number.

161198361567 is a deficient number, since it is larger than the sum of its proper divisors (83898562713).

161198361567 is a wasteful number, since it uses less digits than its factorization.

161198361567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942680502 (or 942680499 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 161198361567 in words is "one hundred sixty-one billion, one hundred ninety-eight million, three hundred sixty-one thousand, five hundred sixty-seven".