80770007777 has 2 divisors, whose sum is σ = 80770007778. Its totient is φ = 80770007776.

The previous prime is 80770007743. The next prime is 80770007789. The reversal of 80770007777 is 77770007708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66728705761 + 14041302016 = 258319^2 + 118496^2 .

It is a cyclic number.

It is not a de Polignac number, because 80770007777 - 2³⁴ = 63590138593 is a prime.

It is not a weakly prime, because it can be changed into another prime (80770007737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40385003888 + 40385003889.

It is an arithmetic number, because the mean of its divisors is an integer number (40385003889).

Almost surely, 2^80770007777 is an apocalyptic number.

It is an amenable number.

80770007777 is a deficient number, since it is larger than the sum of its proper divisors (1).

80770007777 is an equidigital number, since it uses as much as digits as its factorization.

80770007777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 941192, while the sum is 50.

The spelling of 80770007777 in words is "eighty billion, seven hundred seventy million, seven thousand, seven hundred seventy-seven".