167775478322642 has 16 divisors (see below), whose sum is σ = 253757499436032. Its totient is φ = 83190232062000.

The previous prime is 167775478322609. The next prime is 167775478322671. The reversal of 167775478322642 is 246223874577761.

It is a super-2 number, since 2×167775478322642² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146148233 + ... + 147291740.

It is an arithmetic number, because the mean of its divisors is an integer number (15859843714752).

Almost surely, 2^{167775478322642} is an apocalyptic number.

167775478322642 is a deficient number, since it is larger than the sum of its proper divisors (85982021113390).

167775478322642 is a wasteful number, since it uses less digits than its factorization.

167775478322642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293442353.

The product of its digits is 1327656960, while the sum is 71.

The spelling of 167775478322642 in words is "one hundred sixty-seven trillion, seven hundred seventy-five billion, four hundred seventy-eight million, three hundred twenty-two thousand, six hundred forty-two".