65129174489 has 2 divisors, whose sum is σ = 65129174490. Its totient is φ = 65129174488.

The previous prime is 65129174479. The next prime is 65129174647. The reversal of 65129174489 is 98447192156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50583608464 + 14545566025 = 224908^2 + 120605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65129174489 is a prime.

It is a super-2 number, since 2×65129174489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65129174459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32564587244 + 32564587245.

It is an arithmetic number, because the mean of its divisors is an integer number (32564587245).

Almost surely, 2^65129174489 is an apocalyptic number.

It is an amenable number.

65129174489 is a deficient number, since it is larger than the sum of its proper divisors (1).

65129174489 is an equidigital number, since it uses as much as digits as its factorization.

65129174489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 56.

The spelling of 65129174489 in words is "sixty-five billion, one hundred twenty-nine million, one hundred seventy-four thousand, four hundred eighty-nine".