65647617227 has 2 divisors, whose sum is σ = 65647617228. Its totient is φ = 65647617226.

The previous prime is 65647617181. The next prime is 65647617319. The reversal of 65647617227 is 72271674656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65647617227 - 2⁸ = 65647616971 is a prime.

It is not a weakly prime, because it can be changed into another prime (65647619227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32823808613 + 32823808614.

It is an arithmetic number, because the mean of its divisors is an integer number (32823808614).

Almost surely, 2^65647617227 is an apocalyptic number.

65647617227 is a deficient number, since it is larger than the sum of its proper divisors (1).

65647617227 is an equidigital number, since it uses as much as digits as its factorization.

65647617227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 53.

The spelling of 65647617227 in words is "sixty-five billion, six hundred forty-seven million, six hundred seventeen thousand, two hundred twenty-seven".