65497811047 has 4 divisors (see below), whose sum is σ = 68945064280. Its totient is φ = 62050557816.

The previous prime is 65497810997. The next prime is 65497811053. The reversal of 65497811047 is 74011879456.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65497811047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65497810985 and 65497811003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65497811077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723626588 + ... + 1723626625.

It is an arithmetic number, because the mean of its divisors is an integer number (17236266070).

Almost surely, 2^65497811047 is an apocalyptic number.

65497811047 is a deficient number, since it is larger than the sum of its proper divisors (3447253233).

65497811047 is a wasteful number, since it uses less digits than its factorization.

65497811047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447253232.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 65497811047 in words is "sixty-five billion, four hundred ninety-seven million, eight hundred eleven thousand, forty-seven".