167985661958 has 32 divisors (see below), whose sum is σ = 255832806240. Its totient is φ = 82718496000.

The previous prime is 167985661939. The next prime is 167985662003. The reversal of 167985661958 is 859166589761.

It is a junction number, because it is equal to n+sod(n) for n = 167985661891 and 167985661900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43282178 + ... + 43286058.

It is an arithmetic number, because the mean of its divisors is an integer number (7994775195).

Almost surely, 2^167985661958 is an apocalyptic number.

167985661958 is a deficient number, since it is larger than the sum of its proper divisors (87847144282).

167985661958 is a wasteful number, since it uses less digits than its factorization.

167985661958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144.

The product of its digits is 195955200, while the sum is 71.

The spelling of 167985661958 in words is "one hundred sixty-seven billion, nine hundred eighty-five million, six hundred sixty-one thousand, nine hundred fifty-eight".