167660372477 has 4 divisors (see below), whose sum is σ = 180557324220. Its totient is φ = 154763420736.

The previous prime is 167660372461. The next prime is 167660372479. The reversal of 167660372477 is 774273066761.

167660372477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50852956036 + 116807416441 = 225506^2 + 341771^2 .

It is a cyclic number.

It is not a de Polignac number, because 167660372477 - 2⁴ = 167660372461 is a prime.

It is a super-2 number, since 2×167660372477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167660372479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6448475852 + ... + 6448475877.

It is an arithmetic number, because the mean of its divisors is an integer number (45139331055).

Almost surely, 2^167660372477 is an apocalyptic number.

It is an amenable number.

167660372477 is a deficient number, since it is larger than the sum of its proper divisors (12896951743).

167660372477 is a wasteful number, since it uses less digits than its factorization.

167660372477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896951742.

The product of its (nonzero) digits is 12446784, while the sum is 56.

The spelling of 167660372477 in words is "one hundred sixty-seven billion, six hundred sixty million, three hundred seventy-two thousand, four hundred seventy-seven".