65344340251 has 2 divisors, whose sum is σ = 65344340252. Its totient is φ = 65344340250.

The previous prime is 65344340239. The next prime is 65344340329. The reversal of 65344340251 is 15204344356.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65344340251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65344340251.

It is not a weakly prime, because it can be changed into another prime (65344340051) 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, 32672170125 + 32672170126.

It is an arithmetic number, because the mean of its divisors is an integer number (32672170126).

Almost surely, 2^65344340251 is an apocalyptic number.

65344340251 is a deficient number, since it is larger than the sum of its proper divisors (1).

65344340251 is an equidigital number, since it uses as much as digits as its factorization.

65344340251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 65344340251 in words is "sixty-five billion, three hundred forty-four million, three hundred forty thousand, two hundred fifty-one".