65131020599 has 2 divisors, whose sum is σ = 65131020600. Its totient is φ = 65131020598.

The previous prime is 65131020587. The next prime is 65131020601. The reversal of 65131020599 is 99502013156.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65131020599 is a prime.

Together with 65131020601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65131020509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32565510299 + 32565510300.

It is an arithmetic number, because the mean of its divisors is an integer number (32565510300).

Almost surely, 2^65131020599 is an apocalyptic number.

65131020599 is a deficient number, since it is larger than the sum of its proper divisors (1).

65131020599 is an equidigital number, since it uses as much as digits as its factorization.

65131020599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 41.

The spelling of 65131020599 in words is "sixty-five billion, one hundred thirty-one million, twenty thousand, five hundred ninety-nine".