167002488661 has 4 divisors (see below), whose sum is σ = 167258235852. Its totient is φ = 166746741472.

The previous prime is 167002488649. The next prime is 167002488739. The reversal of 167002488661 is 166884200761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166884200761 = 191 ⋅873739271.

It can be written as a sum of positive squares in 2 ways, for example, as 34920396900 + 132082091761 = 186870^2 + 363431^2 .

It is a cyclic number.

It is not a de Polignac number, because 167002488661 - 2⁷ = 167002488533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167002488061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127872616 + ... + 127873921.

It is an arithmetic number, because the mean of its divisors is an integer number (41814558963).

Almost surely, 2^167002488661 is an apocalyptic number.

It is an amenable number.

167002488661 is a deficient number, since it is larger than the sum of its proper divisors (255747191).

167002488661 is an equidigital number, since it uses as much as digits as its factorization.

167002488661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255747190.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 167002488661 in words is "one hundred sixty-seven billion, two million, four hundred eighty-eight thousand, six hundred sixty-one".