10805743777 has 2 divisors, whose sum is σ = 10805743778. Its totient is φ = 10805743776.

The previous prime is 10805743771. The next prime is 10805743829. The reversal of 10805743777 is 77734750801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10691766801 + 113976976 = 103401^2 + 10676^2 .

It is a cyclic number.

It is not a de Polignac number, because 10805743777 - 2³ = 10805743769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10805743777.

It is not a weakly prime, because it can be changed into another prime (10805743771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5402871888 + 5402871889.

It is an arithmetic number, because the mean of its divisors is an integer number (5402871889).

Almost surely, 2^10805743777 is an apocalyptic number.

It is an amenable number.

10805743777 is a deficient number, since it is larger than the sum of its proper divisors (1).

10805743777 is an equidigital number, since it uses as much as digits as its factorization.

10805743777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 10805743777 in words is "ten billion, eight hundred five million, seven hundred forty-three thousand, seven hundred seventy-seven".