2643663463 has 8 divisors (see below), whose sum is σ = 3021830528. Its totient is φ = 2265621624.

The previous prime is 2643663443. The next prime is 2643663469. The reversal of 2643663463 is 3643663462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2643663463 - 2⁹ = 2643662951 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 (2643663469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19420 + ... + 75262.

It is an arithmetic number, because the mean of its divisors is an integer number (377728816).

Almost surely, 2^2643663463 is an apocalyptic number.

2643663463 is a deficient number, since it is larger than the sum of its proper divisors (378167065).

2643663463 is an equidigital number, since it uses as much as digits as its factorization.

2643663463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62613.

The product of its digits is 1119744, while the sum is 43.

The square root of 2643663463 is about 51416.5679815368. The cubic root of 2643663463 is about 1382.7236454636.

Subtracting 2643663463 from its reverse (3643663462), we obtain a palindrome (999999999).

The spelling of 2643663463 in words is "two billion, six hundred forty-three million, six hundred sixty-three thousand, four hundred sixty-three".