65260057517 has 2 divisors, whose sum is σ = 65260057518. Its totient is φ = 65260057516.

The previous prime is 65260057507. The next prime is 65260057559. The reversal of 65260057517 is 71575006256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44873643556 + 20386413961 = 211834^2 + 142781^2 .

It is a cyclic number.

It is not a de Polignac number, because 65260057517 - 2⁴ = 65260057501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65260057507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32630028758 + 32630028759.

It is an arithmetic number, because the mean of its divisors is an integer number (32630028759).

Almost surely, 2^65260057517 is an apocalyptic number.

It is an amenable number.

65260057517 is a deficient number, since it is larger than the sum of its proper divisors (1).

65260057517 is an equidigital number, since it uses as much as digits as its factorization.

65260057517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 65260057517 in words is "sixty-five billion, two hundred sixty million, fifty-seven thousand, five hundred seventeen".