40800773777 has 2 divisors, whose sum is σ = 40800773778. Its totient is φ = 40800773776.

The previous prime is 40800773771. The next prime is 40800773803. The reversal of 40800773777 is 77737700804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38859842641 + 1940931136 = 197129^2 + 44056^2 .

It is a cyclic number.

It is not a de Polignac number, because 40800773777 - 2⁸ = 40800773521 is a prime.

It is not a weakly prime, because it can be changed into another prime (40800773771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20400386888 + 20400386889.

It is an arithmetic number, because the mean of its divisors is an integer number (20400386889).

Almost surely, 2^40800773777 is an apocalyptic number.

It is an amenable number.

40800773777 is a deficient number, since it is larger than the sum of its proper divisors (1).

40800773777 is an equidigital number, since it uses as much as digits as its factorization.

40800773777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1613472, while the sum is 50.

The spelling of 40800773777 in words is "forty billion, eight hundred million, seven hundred seventy-three thousand, seven hundred seventy-seven".