6463343653 has 6 divisors (see below), whose sum is σ = 6998768754. Its totient is φ = 5966163216.

The previous prime is 6463343609. The next prime is 6463343659. The reversal of 6463343653 is 3563433646.

It can be written as a sum of positive squares in 3 ways, for example, as 300779649 + 6162564004 = 17343^2 + 78502^2 .

It is not a de Polignac number, because 6463343653 - 2²¹ = 6461246501 is a prime.

It is a super-2 number, since 2×6463343653² = 83549622353550768818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463343659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19122150 + ... + 19122487.

It is an arithmetic number, because the mean of its divisors is an integer number (1166461459).

Almost surely, 2^6463343653 is an apocalyptic number.

It is an amenable number.

6463343653 is a deficient number, since it is larger than the sum of its proper divisors (535425101).

6463343653 is a wasteful number, since it uses less digits than its factorization.

6463343653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38244663 (or 38244650 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 43.

The square root of 6463343653 is about 80394.9230548795. The cubic root of 6463343653 is about 1862.7407520143.

The spelling of 6463343653 in words is "six billion, four hundred sixty-three million, three hundred forty-three thousand, six hundred fifty-three".