167816974077 has 6 divisors (see below), whose sum is σ = 242402295902. Its totient is φ = 111877982712.

The previous prime is 167816974033. The next prime is 167816974097. The reversal of 167816974077 is 770479618761.

167816974077 is a `hidden beast` number, since 1 + 67 + 8 + 169 + 7 + 407 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84999070116 + 82817903961 = 291546^2 + 287781^2 .

It is not a de Polignac number, because 167816974077 - 2⁷ = 167816973949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167816974097) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 9323165218 + ... + 9323165235.

Almost surely, 2^167816974077 is an apocalyptic number.

It is an amenable number.

167816974077 is a deficient number, since it is larger than the sum of its proper divisors (74585321825).

167816974077 is a wasteful number, since it uses less digits than its factorization.

167816974077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18646330459 (or 18646330456 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 63.

The spelling of 167816974077 in words is "one hundred sixty-seven billion, eight hundred sixteen million, nine hundred seventy-four thousand, seventy-seven".