65422204649 has 2 divisors, whose sum is σ = 65422204650. Its totient is φ = 65422204648.

The previous prime is 65422204621. The next prime is 65422204657. The reversal of 65422204649 is 94640222456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51118044649 + 14304160000 = 226093^2 + 119600^2 .

It is a cyclic number.

It is not a de Polignac number, because 65422204649 - 2¹² = 65422200553 is a prime.

It is a super-2 number, since 2×65422204649² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65422234649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32711102324 + 32711102325.

It is an arithmetic number, because the mean of its divisors is an integer number (32711102325).

Almost surely, 2^65422204649 is an apocalyptic number.

It is an amenable number.

65422204649 is a deficient number, since it is larger than the sum of its proper divisors (1).

65422204649 is an equidigital number, since it uses as much as digits as its factorization.

65422204649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 65422204649 in words is "sixty-five billion, four hundred twenty-two million, two hundred four thousand, six hundred forty-nine".