4776996781 has 2 divisors, whose sum is σ = 4776996782. Its totient is φ = 4776996780.

The previous prime is 4776996713. The next prime is 4776996823. The reversal of 4776996781 is 1876996774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4255605225 + 521391556 = 65235^2 + 22834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4776996781 - 2⁹ = 4776996269 is a prime.

It is a super-2 number, since 2×4776996781² = 45639396491368723922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4776999781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2388498390 + 2388498391.

It is an arithmetic number, because the mean of its divisors is an integer number (2388498391).

Almost surely, 2^4776996781 is an apocalyptic number.

It is an amenable number.

4776996781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4776996781 is an equidigital number, since it uses as much as digits as its factorization.

4776996781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 64.

The square root of 4776996781 is about 69115.8214955158. The cubic root of 4776996781 is about 1684.1663386310.

The spelling of 4776996781 in words is "four billion, seven hundred seventy-six million, nine hundred ninety-six thousand, seven hundred eighty-one".