65507134477 has 2 divisors, whose sum is σ = 65507134478. Its totient is φ = 65507134476.

The previous prime is 65507134453. The next prime is 65507134513. The reversal of 65507134477 is 77443170556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55079865481 + 10427268996 = 234691^2 + 102114^2 .

It is a cyclic number.

It is not a de Polignac number, because 65507134477 - 2¹¹ = 65507132429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65507134477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65507134177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32753567238 + 32753567239.

It is an arithmetic number, because the mean of its divisors is an integer number (32753567239).

Almost surely, 2^65507134477 is an apocalyptic number.

It is an amenable number.

65507134477 is a deficient number, since it is larger than the sum of its proper divisors (1).

65507134477 is an equidigital number, since it uses as much as digits as its factorization.

65507134477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 65507134477 in words is "sixty-five billion, five hundred seven million, one hundred thirty-four thousand, four hundred seventy-seven".