65674206161 has 2 divisors, whose sum is σ = 65674206162. Its totient is φ = 65674206160.

The previous prime is 65674206133. The next prime is 65674206343. The reversal of 65674206161 is 16160247656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47602512400 + 18071693761 = 218180^2 + 134431^2 .

It is a cyclic number.

It is not a de Polignac number, because 65674206161 - 2¹⁰ = 65674205137 is a prime.

It is not a weakly prime, because it can be changed into another prime (65674206131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32837103080 + 32837103081.

It is an arithmetic number, because the mean of its divisors is an integer number (32837103081).

Almost surely, 2^65674206161 is an apocalyptic number.

It is an amenable number.

65674206161 is a deficient number, since it is larger than the sum of its proper divisors (1).

65674206161 is an equidigital number, since it uses as much as digits as its factorization.

65674206161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 65674206161 in words is "sixty-five billion, six hundred seventy-four million, two hundred six thousand, one hundred sixty-one".