164195688061 has 6 divisors (see below), whose sum is σ = 173292402462. Its totient is φ = 155553809400.

The previous prime is 164195688047. The next prime is 164195688101. The reversal of 164195688061 is 160886591461.

It can be written as a sum of positive squares in only one way, i.e., 141955632900 + 22240055161 = 376770^2 + 149131^2 .

It is not a de Polignac number, because 164195688061 - 2⁵ = 164195688029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164195687993 and 164195688011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164195688001) 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 5 ways as a sum of consecutive naturals, for example, 227417490 + ... + 227418211.

It is an arithmetic number, because the mean of its divisors is an integer number (28882067077).

Almost surely, 2^164195688061 is an apocalyptic number.

It is an amenable number.

164195688061 is a deficient number, since it is larger than the sum of its proper divisors (9096714401).

164195688061 is an equidigital number, since it uses as much as digits as its factorization.

164195688061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454835739 (or 454835720 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 164195688061 in words is "one hundred sixty-four billion, one hundred ninety-five million, six hundred eighty-eight thousand, sixty-one".