164158634677 has 2 divisors, whose sum is σ = 164158634678. Its totient is φ = 164158634676.

The previous prime is 164158634567. The next prime is 164158634683. The reversal of 164158634677 is 776436851461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155684695761 + 8473938916 = 394569^2 + 92054^2 .

It is an emirp because it is prime and its reverse (776436851461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164158634677 - 2³⁵ = 129798896309 is a prime.

It is a super-3 number, since 3×164158634677³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164158634377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82079317338 + 82079317339.

It is an arithmetic number, because the mean of its divisors is an integer number (82079317339).

Almost surely, 2^164158634677 is an apocalyptic number.

It is an amenable number.

164158634677 is a deficient number, since it is larger than the sum of its proper divisors (1).

164158634677 is an equidigital number, since it uses as much as digits as its factorization.

164158634677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 58.

The spelling of 164158634677 in words is "one hundred sixty-four billion, one hundred fifty-eight million, six hundred thirty-four thousand, six hundred seventy-seven".