42878275077761 has 2 divisors, whose sum is σ = 42878275077762. Its totient is φ = 42878275077760.

The previous prime is 42878275077749. The next prime is 42878275077871. The reversal of 42878275077761 is 16777057287824.

42878275077761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32005824002161 + 10872451075600 = 5657369^2 + 3297340^2 .

It is a cyclic number.

It is not a de Polignac number, because 42878275077761 - 2³⁴ = 42861095208577 is a prime.

It is not a weakly prime, because it can be changed into another prime (42878275077721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439137538880 + 21439137538881.

It is an arithmetic number, because the mean of its divisors is an integer number (21439137538881).

Almost surely, 2^{42878275077761} is an apocalyptic number.

It is an amenable number.

42878275077761 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878275077761 is an equidigital number, since it uses as much as digits as its factorization.

42878275077761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516311040, while the sum is 71.

The spelling of 42878275077761 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-five million, seventy-seven thousand, seven hundred sixty-one".