167647604854381 has 2 divisors, whose sum is σ = 167647604854382. Its totient is φ = 167647604854380.

The previous prime is 167647604854271. The next prime is 167647604854403. The reversal of 167647604854381 is 183458406746761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161723589609481 + 5924015244900 = 12717059^2 + 2433930^2 .

It is a cyclic number.

It is not a de Polignac number, because 167647604854381 - 2²³ = 167647596465773 is a prime.

It is a super-3 number, since 3×167647604854381³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 167647604854381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167647604854981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83823802427190 + 83823802427191.

It is an arithmetic number, because the mean of its divisors is an integer number (83823802427191).

Almost surely, 2^{167647604854381} is an apocalyptic number.

It is an amenable number.

167647604854381 is a deficient number, since it is larger than the sum of its proper divisors (1).

167647604854381 is an equidigital number, since it uses as much as digits as its factorization.

167647604854381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 650280960, while the sum is 70.

The spelling of 167647604854381 in words is "one hundred sixty-seven trillion, six hundred forty-seven billion, six hundred four million, eight hundred fifty-four thousand, three hundred eighty-one".