4775726643 has 4 divisors (see below), whose sum is σ = 6367635528. Its totient is φ = 3183817760.

The previous prime is 4775726633. The next prime is 4775726651. The reversal of 4775726643 is 3466275774.

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 4775726643 - 2⁵ = 4775726611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4775726633) 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, 795954438 + ... + 795954443.

It is an arithmetic number, because the mean of its divisors is an integer number (1591908882).

Almost surely, 2^4775726643 is an apocalyptic number.

4775726643 is a deficient number, since it is larger than the sum of its proper divisors (1591908885).

4775726643 is a wasteful number, since it uses less digits than its factorization.

4775726643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591908884.

The product of its digits is 5927040, while the sum is 51.

The square root of 4775726643 is about 69106.6324096320. The cubic root of 4775726643 is about 1684.0170598142.

The spelling of 4775726643 in words is "four billion, seven hundred seventy-five million, seven hundred twenty-six thousand, six hundred forty-three".