42774317087 has 2 divisors, whose sum is σ = 42774317088. Its totient is φ = 42774317086.

The previous prime is 42774317071. The next prime is 42774317099. The reversal of 42774317087 is 78071347724.

42774317087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42774317087 - 2⁴ = 42774317071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42774317687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387158543 + 21387158544.

It is an arithmetic number, because the mean of its divisors is an integer number (21387158544).

Almost surely, 2^42774317087 is an apocalyptic number.

42774317087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42774317087 is an equidigital number, since it uses as much as digits as its factorization.

42774317087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1843968, while the sum is 50.

The spelling of 42774317087 in words is "forty-two billion, seven hundred seventy-four million, three hundred seventeen thousand, eighty-seven".