6463793551 has 4 divisors (see below), whose sum is σ = 6638490712. Its totient is φ = 6289096392.

The previous prime is 6463793537. The next prime is 6463793561. The reversal of 6463793551 is 1553973646.

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

It is a cyclic number.

It is not a de Polignac number, because 6463793551 - 2⁵ = 6463793519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6463793495 and 6463793504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463793561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87348525 + ... + 87348598.

It is an arithmetic number, because the mean of its divisors is an integer number (1659622678).

Almost surely, 2^6463793551 is an apocalyptic number.

6463793551 is a deficient number, since it is larger than the sum of its proper divisors (174697161).

6463793551 is a wasteful number, since it uses less digits than its factorization.

6463793551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174697160.

The product of its digits is 2041200, while the sum is 49.

The square root of 6463793551 is about 80397.7210560100. The cubic root of 6463793551 is about 1862.7839713313.

The spelling of 6463793551 in words is "six billion, four hundred sixty-three million, seven hundred ninety-three thousand, five hundred fifty-one".