6463916765 has 16 divisors (see below), whose sum is σ = 7866957168. Its totient is φ = 5097701376.

The previous prime is 6463916747. The next prime is 6463916777. The reversal of 6463916765 is 5676193646.

It can be written as a sum of positive squares in 8 ways, for example, as 340697764 + 6123219001 = 18458^2 + 78251^2 .

It is a cyclic number.

It is not a de Polignac number, because 6463916765 - 2¹⁸ = 6463654621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054349 + ... + 1060461.

It is an arithmetic number, because the mean of its divisors is an integer number (491684823).

Almost surely, 2^6463916765 is an apocalyptic number.

It is an amenable number.

6463916765 is a deficient number, since it is larger than the sum of its proper divisors (1403040403).

6463916765 is a wasteful number, since it uses less digits than its factorization.

6463916765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9088.

The product of its digits is 4898880, while the sum is 53.

The square root of 6463916765 is about 80398.4873302975. The cubic root of 6463916765 is about 1862.7958074976.

The spelling of 6463916765 in words is "six billion, four hundred sixty-three million, nine hundred sixteen thousand, seven hundred sixty-five".