65497469249 has 2 divisors, whose sum is σ = 65497469250. Its totient is φ = 65497469248.

The previous prime is 65497469243. The next prime is 65497469299. The reversal of 65497469249 is 94296479456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45635640625 + 19861828624 = 213625^2 + 140932^2 .

It is a cyclic number.

It is not a de Polignac number, because 65497469249 - 2²⁴ = 65480692033 is a prime.

It is not a weakly prime, because it can be changed into another prime (65497469243) 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, 32748734624 + 32748734625.

It is an arithmetic number, because the mean of its divisors is an integer number (32748734625).

Almost surely, 2^65497469249 is an apocalyptic number.

It is an amenable number.

65497469249 is a deficient number, since it is larger than the sum of its proper divisors (1).

65497469249 is an equidigital number, since it uses as much as digits as its factorization.

65497469249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 65.

The spelling of 65497469249 in words is "sixty-five billion, four hundred ninety-seven million, four hundred sixty-nine thousand, two hundred forty-nine".