65701724873 has 2 divisors, whose sum is σ = 65701724874. Its totient is φ = 65701724872.

The previous prime is 65701724857. The next prime is 65701724929. The reversal of 65701724873 is 37842710756.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63296018569 + 2405706304 = 251587^2 + 49048^2 .

It is a cyclic number.

It is not a de Polignac number, because 65701724873 - 2⁴ = 65701724857 is a prime.

It is a super-2 number, since 2×65701724873² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65701724843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32850862436 + 32850862437.

It is an arithmetic number, because the mean of its divisors is an integer number (32850862437).

Almost surely, 2^65701724873 is an apocalyptic number.

It is an amenable number.

65701724873 is a deficient number, since it is larger than the sum of its proper divisors (1).

65701724873 is an equidigital number, since it uses as much as digits as its factorization.

65701724873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 65701724873 in words is "sixty-five billion, seven hundred one million, seven hundred twenty-four thousand, eight hundred seventy-three".