167212428891606 has 192 divisors, whose sum is σ = 438883044163200. Its totient is φ = 44915751272448.

The previous prime is 167212428891601. The next prime is 167212428891631. The reversal of 167212428891606 is 606198824212761.

It is a happy number.

167212428891606 is a `hidden beast` number, since 1 + 6 + 7 + 2 + 12 + 4 + 2 + 8 + 8 + 9 + 1 + 606 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167212428891601) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11245700340 + ... + 11245715208.

It is an arithmetic number, because the mean of its divisors is an integer number (2285849188350).

Almost surely, 2^{167212428891606} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 167212428891606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219441522081600).

167212428891606 is an abundant number, since it is smaller than the sum of its proper divisors (271670615271594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

167212428891606 is a wasteful number, since it uses less digits than its factorization.

167212428891606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20263 (or 20260 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 167212428891606 in words is "one hundred sixty-seven trillion, two hundred twelve billion, four hundred twenty-eight million, eight hundred ninety-one thousand, six hundred six".