65073939457 has 2 divisors, whose sum is σ = 65073939458. Its totient is φ = 65073939456.

The previous prime is 65073939433. The next prime is 65073939529. The reversal of 65073939457 is 75493937056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49650534976 + 15423404481 = 222824^2 + 124191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65073939457 is a prime.

It is not a weakly prime, because it can be changed into another prime (65073939157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32536969728 + 32536969729.

It is an arithmetic number, because the mean of its divisors is an integer number (32536969729).

Almost surely, 2^65073939457 is an apocalyptic number.

It is an amenable number.

65073939457 is a deficient number, since it is larger than the sum of its proper divisors (1).

65073939457 is an equidigital number, since it uses as much as digits as its factorization.

65073939457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21432600, while the sum is 58.

The spelling of 65073939457 in words is "sixty-five billion, seventy-three million, nine hundred thirty-nine thousand, four hundred fifty-seven".