65131020601 has 2 divisors, whose sum is σ = 65131020602. Its totient is φ = 65131020600.

The previous prime is 65131020599. The next prime is 65131020613. The reversal of 65131020601 is 10602013156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58333842576 + 6797178025 = 241524^2 + 82445^2 .

It is a cyclic number.

It is not a de Polignac number, because 65131020601 - 2¹ = 65131020599 is a prime.

Together with 65131020599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65131020631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32565510300 + 32565510301.

It is an arithmetic number, because the mean of its divisors is an integer number (32565510301).

Almost surely, 2^65131020601 is an apocalyptic number.

It is an amenable number.

65131020601 is a deficient number, since it is larger than the sum of its proper divisors (1).

65131020601 is an equidigital number, since it uses as much as digits as its factorization.

65131020601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 65131020601 its reverse (10602013156), we get a palindrome (75733033757).

The spelling of 65131020601 in words is "sixty-five billion, one hundred thirty-one million, twenty thousand, six hundred one".