4766645921 has 2 divisors, whose sum is σ = 4766645922. Its totient is φ = 4766645920.

The previous prime is 4766645911. The next prime is 4766645941. The reversal of 4766645921 is 1295466674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3476399521 + 1290246400 = 58961^2 + 35920^2 .

It is a cyclic number.

It is not a de Polignac number, because 4766645921 - 2³⁰ = 3692904097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4766645921.

It is not a weakly prime, because it can be changed into another prime (4766645911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2383322960 + 2383322961.

It is an arithmetic number, because the mean of its divisors is an integer number (2383322961).

Almost surely, 2^4766645921 is an apocalyptic number.

It is an amenable number.

4766645921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4766645921 is an equidigital number, since it uses as much as digits as its factorization.

4766645921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 4766645921 is about 69040.9003489960. The cubic root of 4766645921 is about 1682.9490343282.

The spelling of 4766645921 in words is "four billion, seven hundred sixty-six million, six hundred forty-five thousand, nine hundred twenty-one".