65073908249 has 32 divisors (see below), whose sum is σ = 77602853376. Its totient is φ = 53404323840.

The previous prime is 65073908243. The next prime is 65073908281. The reversal of 65073908249 is 94280937056.

It is a happy number.

It is not a de Polignac number, because 65073908249 - 2⁸ = 65073907993 is a prime.

It is a super-2 number, since 2×65073908249² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65073908249.

It is not an unprimeable number, because it can be changed into a prime (65073908243) 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 in 31 ways as a sum of consecutive naturals, for example, 10607387 + ... + 10613519.

It is an arithmetic number, because the mean of its divisors is an integer number (2425089168).

Almost surely, 2^65073908249 is an apocalyptic number.

It is an amenable number.

65073908249 is a deficient number, since it is larger than the sum of its proper divisors (12528945127).

65073908249 is a wasteful number, since it uses less digits than its factorization.

65073908249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 65073908249 in words is "sixty-five billion, seventy-three million, nine hundred eight thousand, two hundred forty-nine".