42774308641 has 2 divisors, whose sum is σ = 42774308642. Its totient is φ = 42774308640.

The previous prime is 42774308623. The next prime is 42774308671. The reversal of 42774308641 is 14680347724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26080635025 + 16693673616 = 161495^2 + 129204^2 .

It is a cyclic number.

It is not a de Polignac number, because 42774308641 - 2⁷ = 42774308513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42774308591 and 42774308600.

It is not a weakly prime, because it can be changed into another prime (42774308671) 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, 21387154320 + 21387154321.

It is an arithmetic number, because the mean of its divisors is an integer number (21387154321).

Almost surely, 2^42774308641 is an apocalyptic number.

It is an amenable number.

42774308641 is a deficient number, since it is larger than the sum of its proper divisors (1).

42774308641 is an equidigital number, since it uses as much as digits as its factorization.

42774308641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 42774308641 in words is "forty-two billion, seven hundred seventy-four million, three hundred eight thousand, six hundred forty-one".