4812386661 has 20 divisors (see below), whose sum is σ = 7191114700. Its totient is φ = 3207257856.

The previous prime is 4812386627. The next prime is 4812386713. The reversal of 4812386661 is 1666832184.

It can be written as a sum of positive squares in 2 ways, for example, as 1997553636 + 2814833025 = 44694^2 + 53055^2 .

It is not a de Polignac number, because 4812386661 - 2¹³ = 4812378469 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 (4812388661) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 327255 + ... + 341643.

It is an arithmetic number, because the mean of its divisors is an integer number (359555735).

Almost surely, 2^4812386661 is an apocalyptic number.

It is an amenable number.

4812386661 is a deficient number, since it is larger than the sum of its proper divisors (2378728039).

4812386661 is a wasteful number, since it uses less digits than its factorization.

4812386661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18530 (or 18521 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 4812386661 is about 69371.3677319397. The cubic root of 4812386661 is about 1688.3151001510.

The spelling of 4812386661 in words is "four billion, eight hundred twelve million, three hundred eighty-six thousand, six hundred sixty-one".