167775545657 has 4 divisors (see below), whose sum is σ = 167778869760. Its totient is φ = 167772221556.

The previous prime is 167775545653. The next prime is 167775545669. The reversal of 167775545657 is 756545577761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 756545577761 = 408209 ⋅1853329.

It is a cyclic number.

It is not a de Polignac number, because 167775545657 - 2² = 167775545653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 167775545593 and 167775545602.

It is not an unprimeable number, because it can be changed into a prime (167775545653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585157 + ... + 1687682.

It is an arithmetic number, because the mean of its divisors is an integer number (41944717440).

Almost surely, 2^167775545657 is an apocalyptic number.

It is an amenable number.

167775545657 is a deficient number, since it is larger than the sum of its proper divisors (3324103).

167775545657 is an equidigital number, since it uses as much as digits as its factorization.

167775545657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324102.

The product of its digits is 216090000, while the sum is 65.

The spelling of 167775545657 in words is "one hundred sixty-seven billion, seven hundred seventy-five million, five hundred forty-five thousand, six hundred fifty-seven".