6463877279 has 4 divisors (see below), whose sum is σ = 6464039640. Its totient is φ = 6463714920.

The previous prime is 6463877257. The next prime is 6463877291. The reversal of 6463877279 is 9727783646.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6463877279 - 2¹⁶ = 6463811743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463877209) 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, 23732 + ... + 116150.

It is an arithmetic number, because the mean of its divisors is an integer number (1616009910).

Almost surely, 2^6463877279 is an apocalyptic number.

6463877279 is a deficient number, since it is larger than the sum of its proper divisors (162361).

6463877279 is an equidigital number, since it uses as much as digits as its factorization.

6463877279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162360.

The product of its digits is 21337344, while the sum is 59.

The square root of 6463877279 is about 80398.2417656008. The cubic root of 6463877279 is about 1862.7920144153.

The spelling of 6463877279 in words is "six billion, four hundred sixty-three million, eight hundred seventy-seven thousand, two hundred seventy-nine".