76842224777 has 2 divisors, whose sum is σ = 76842224778. Its totient is φ = 76842224776.

The previous prime is 76842224749. The next prime is 76842224867. The reversal of 76842224777 is 77742224867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64904695696 + 11937529081 = 254764^2 + 109259^2 .

It is a cyclic number.

It is not a de Polignac number, because 76842224777 - 2⁶ = 76842224713 is a prime.

It is not a weakly prime, because it can be changed into another prime (76842224717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38421112388 + 38421112389.

It is an arithmetic number, because the mean of its divisors is an integer number (38421112389).

Almost surely, 2^76842224777 is an apocalyptic number.

It is an amenable number.

76842224777 is a deficient number, since it is larger than the sum of its proper divisors (1).

76842224777 is an equidigital number, since it uses as much as digits as its factorization.

76842224777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14751744, while the sum is 56.

The spelling of 76842224777 in words is "seventy-six billion, eight hundred forty-two million, two hundred twenty-four thousand, seven hundred seventy-seven".