40770777449 has 2 divisors, whose sum is σ = 40770777450. Its totient is φ = 40770777448.

The previous prime is 40770777419. The next prime is 40770777457. The reversal of 40770777449 is 94477707704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36736622224 + 4034155225 = 191668^2 + 63515^2 .

It is a cyclic number.

It is not a de Polignac number, because 40770777449 - 2²⁰ = 40769728873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40770777394 and 40770777403.

It is not a weakly prime, because it can be changed into another prime (40770777419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20385388724 + 20385388725.

It is an arithmetic number, because the mean of its divisors is an integer number (20385388725).

Almost surely, 2^40770777449 is an apocalyptic number.

It is an amenable number.

40770777449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40770777449 is an equidigital number, since it uses as much as digits as its factorization.

40770777449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9680832, while the sum is 56.

The spelling of 40770777449 in words is "forty billion, seven hundred seventy million, seven hundred seventy-seven thousand, four hundred forty-nine".