7643313263 has 4 divisors (see below), whose sum is σ = 7703496960. Its totient is φ = 7583129568.

The previous prime is 7643313259. The next prime is 7643313299. The reversal of 7643313263 is 3623133467.

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 7643313263 - 2² = 7643313259 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 (7643313463) 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, 30091658 + ... + 30091911.

It is an arithmetic number, because the mean of its divisors is an integer number (1925874240).

Almost surely, 2^7643313263 is an apocalyptic number.

7643313263 is a deficient number, since it is larger than the sum of its proper divisors (60183697).

7643313263 is a wasteful number, since it uses less digits than its factorization.

7643313263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60183696.

The product of its digits is 163296, while the sum is 38.

The square root of 7643313263 is about 87426.0445347952. The cubic root of 7643313263 is about 1969.8230717962.

The spelling of 7643313263 in words is "seven billion, six hundred forty-three million, three hundred thirteen thousand, two hundred sixty-three".