167135784961 has 4 divisors (see below), whose sum is σ = 169875715924. Its totient is φ = 164395854000.

The previous prime is 167135784931. The next prime is 167135784989. The reversal of 167135784961 is 169487531761.

It is a happy number.

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 78722330625 + 88413454336 = 280575^2 + 297344^2 .

It is not a de Polignac number, because 167135784961 - 2⁵ = 167135784929 is a prime.

It is a super-2 number, since 2×167135784961² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 167135784896 and 167135784905.

It is not an unprimeable number, because it can be changed into a prime (167135784931) 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, 1369965390 + ... + 1369965511.

It is an arithmetic number, because the mean of its divisors is an integer number (42468928981).

Almost surely, 2^167135784961 is an apocalyptic number.

It is an amenable number.

167135784961 is a deficient number, since it is larger than the sum of its proper divisors (2739930963).

167135784961 is an equidigital number, since it uses as much as digits as its factorization.

167135784961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739930962.

The product of its digits is 7620480, while the sum is 58.

The spelling of 167135784961 in words is "one hundred sixty-seven billion, one hundred thirty-five million, seven hundred eighty-four thousand, nine hundred sixty-one".