65006565997 has 2 divisors, whose sum is σ = 65006565998. Its totient is φ = 65006565996.

The previous prime is 65006565973. The next prime is 65006566021. The reversal of 65006565997 is 79956560056.

It is a balanced prime because it is at equal distance from previous prime (65006565973) and next prime (65006566021).

It can be written as a sum of positive squares in only one way, i.e., 50802455236 + 14204110761 = 225394^2 + 119181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65006565997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65006565947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32503282998 + 32503282999.

It is an arithmetic number, because the mean of its divisors is an integer number (32503282999).

Almost surely, 2^65006565997 is an apocalyptic number.

It is an amenable number.

65006565997 is a deficient number, since it is larger than the sum of its proper divisors (1).

65006565997 is an equidigital number, since it uses as much as digits as its factorization.

65006565997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15309000, while the sum is 58.

The spelling of 65006565997 in words is "sixty-five billion, six million, five hundred sixty-five thousand, nine hundred ninety-seven".