42775845844087 has 2 divisors, whose sum is σ = 42775845844088. Its totient is φ = 42775845844086.

The previous prime is 42775845844051. The next prime is 42775845844099. The reversal of 42775845844087 is 78044854857724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42775845844087 - 2⁷ = 42775845843959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42775845844987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387922922043 + 21387922922044.

It is an arithmetic number, because the mean of its divisors is an integer number (21387922922044).

Almost surely, 2^{42775845844087} is an apocalyptic number.

42775845844087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775845844087 is an equidigital number, since it uses as much as digits as its factorization.

42775845844087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2247884800, while the sum is 73.

The spelling of 42775845844087 in words is "forty-two trillion, seven hundred seventy-five billion, eight hundred forty-five million, eight hundred forty-four thousand, eighty-seven".