164195655277 has 2 divisors, whose sum is σ = 164195655278. Its totient is φ = 164195655276.

The previous prime is 164195655251. The next prime is 164195655287. The reversal of 164195655277 is 772556591461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95583615556 + 68612039721 = 309166^2 + 261939^2 .

It is an emirp because it is prime and its reverse (772556591461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164195655277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164195655227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82097827638 + 82097827639.

It is an arithmetic number, because the mean of its divisors is an integer number (82097827639).

Almost surely, 2^164195655277 is an apocalyptic number.

It is an amenable number.

164195655277 is a deficient number, since it is larger than the sum of its proper divisors (1).

164195655277 is an equidigital number, since it uses as much as digits as its factorization.

164195655277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876000, while the sum is 58.

The spelling of 164195655277 in words is "one hundred sixty-four billion, one hundred ninety-five million, six hundred fifty-five thousand, two hundred seventy-seven".