65671636237 has 2 divisors, whose sum is σ = 65671636238. Its totient is φ = 65671636236.

The previous prime is 65671636229. The next prime is 65671636267. The reversal of 65671636237 is 73263617656.

65671636237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65591819881 + 79816356 = 256109^2 + 8934^2 .

It is a cyclic number.

It is not a de Polignac number, because 65671636237 - 2³ = 65671636229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65671636207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32835818118 + 32835818119.

It is an arithmetic number, because the mean of its divisors is an integer number (32835818119).

Almost surely, 2^65671636237 is an apocalyptic number.

It is an amenable number.

65671636237 is a deficient number, since it is larger than the sum of its proper divisors (1).

65671636237 is an equidigital number, since it uses as much as digits as its factorization.

65671636237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 52.

The spelling of 65671636237 in words is "sixty-five billion, six hundred seventy-one million, six hundred thirty-six thousand, two hundred thirty-seven".