4677472781 has 2 divisors, whose sum is σ = 4677472782. Its totient is φ = 4677472780.

The previous prime is 4677472757. The next prime is 4677472819. The reversal of 4677472781 is 1872747764.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4532655625 + 144817156 = 67325^2 + 12034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4677472781 is a prime.

It is a super-2 number, since 2×4677472781² = 43757503233991747922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4677472721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2338736390 + 2338736391.

It is an arithmetic number, because the mean of its divisors is an integer number (2338736391).

Almost surely, 2^4677472781 is an apocalyptic number.

It is an amenable number.

4677472781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4677472781 is an equidigital number, since it uses as much as digits as its factorization.

4677472781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3687936, while the sum is 53.

The square root of 4677472781 is about 68392.0520309195. The cubic root of 4677472781 is about 1672.3881809201.

The spelling of 4677472781 in words is "four billion, six hundred seventy-seven million, four hundred seventy-two thousand, seven hundred eighty-one".