427645562987 has 2 divisors, whose sum is σ = 427645562988. Its totient is φ = 427645562986.

The previous prime is 427645562977. The next prime is 427645563029. The reversal of 427645562987 is 789265546724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427645562987 - 2⁶ = 427645562923 is a prime.

It is not a weakly prime, because it can be changed into another prime (427645562977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213822781493 + 213822781494.

It is an arithmetic number, because the mean of its divisors is an integer number (213822781494).

Almost surely, 2^427645562987 is an apocalyptic number.

427645562987 is a deficient number, since it is larger than the sum of its proper divisors (1).

427645562987 is an equidigital number, since it uses as much as digits as its factorization.

427645562987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 203212800, while the sum is 65.

The spelling of 427645562987 in words is "four hundred twenty-seven billion, six hundred forty-five million, five hundred sixty-two thousand, nine hundred eighty-seven".