65617055599 has 2 divisors, whose sum is σ = 65617055600. Its totient is φ = 65617055598.

The previous prime is 65617055597. The next prime is 65617055629. The reversal of 65617055599 is 99555071656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65617055599 - 2¹ = 65617055597 is a prime.

Together with 65617055597, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65617055597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32808527799 + 32808527800.

It is an arithmetic number, because the mean of its divisors is an integer number (32808527800).

Almost surely, 2^65617055599 is an apocalyptic number.

65617055599 is a deficient number, since it is larger than the sum of its proper divisors (1).

65617055599 is an equidigital number, since it uses as much as digits as its factorization.

65617055599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12757500, while the sum is 58.

The spelling of 65617055599 in words is "sixty-five billion, six hundred seventeen million, fifty-five thousand, five hundred ninety-nine".