167438678170061 has 4 divisors (see below), whose sum is σ = 167469005775324. Its totient is φ = 167408350564800.

The previous prime is 167438678170039. The next prime is 167438678170067. The reversal of 167438678170061 is 160071876834761.

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 57736746340900 + 109701931829161 = 7598470^2 + 10473869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167438678170061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 167438678170061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167438678170067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15163794350 + ... + 15163805391.

It is an arithmetic number, because the mean of its divisors is an integer number (41867251443831).

Almost surely, 2^{167438678170061} is an apocalyptic number.

It is an amenable number.

167438678170061 is a deficient number, since it is larger than the sum of its proper divisors (30327605263).

167438678170061 is an equidigital number, since it uses as much as digits as its factorization.

167438678170061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30327605262.

The product of its (nonzero) digits is 56899584, while the sum is 65.

The spelling of 167438678170061 in words is "one hundred sixty-seven trillion, four hundred thirty-eight billion, six hundred seventy-eight million, one hundred seventy thousand, sixty-one".