84464664640487 has 2 divisors, whose sum is σ = 84464664640488. Its totient is φ = 84464664640486.

The previous prime is 84464664640387. The next prime is 84464664640493. The reversal of 84464664640487 is 78404646646448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84464664640487 - 2¹⁶ = 84464664574951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84464664640487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84464664640387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42232332320243 + 42232332320244.

It is an arithmetic number, because the mean of its divisors is an integer number (42232332320244).

Almost surely, 2^{84464664640487} is an apocalyptic number.

84464664640487 is a deficient number, since it is larger than the sum of its proper divisors (1).

84464664640487 is an equidigital number, since it uses as much as digits as its factorization.

84464664640487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2378170368, while the sum is 71.

The spelling of 84464664640487 in words is "eighty-four trillion, four hundred sixty-four billion, six hundred sixty-four million, six hundred forty thousand, four hundred eighty-seven".