65497469247 has 12 divisors (see below), whose sum is σ = 108122806480. Its totient is φ = 37427125248.

The previous prime is 65497469243. The next prime is 65497469249. The reversal of 65497469247 is 74296479456.

It is a happy number.

65497469247 is a `hidden beast` number, since 6 + 549 + 7 + 4 + 69 + 24 + 7 = 666.

It is not a de Polignac number, because 65497469247 - 2² = 65497469243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1039642369 = 65497469247 / (6 + 5 + 4 + 9 + 7 + 4 + 6 + 9 + 2 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65497469243) 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 11 ways as a sum of consecutive naturals, for example, 519821122 + ... + 519821247.

Almost surely, 2^65497469247 is an apocalyptic number.

65497469247 is a deficient number, since it is larger than the sum of its proper divisors (42625337233).

65497469247 is a wasteful number, since it uses less digits than its factorization.

65497469247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039642382 (or 1039642379 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 65497469247 in words is "sixty-five billion, four hundred ninety-seven million, four hundred sixty-nine thousand, two hundred forty-seven".