40320420168487 has 2 divisors, whose sum is σ = 40320420168488. Its totient is φ = 40320420168486.

The previous prime is 40320420168481. The next prime is 40320420168521. The reversal of 40320420168487 is 78486102402304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40320420168487 - 2²⁷ = 40320285950759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40320420168487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40320420168481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160210084243 + 20160210084244.

It is an arithmetic number, because the mean of its divisors is an integer number (20160210084244).

Almost surely, 2^{40320420168487} is an apocalyptic number.

40320420168487 is a deficient number, since it is larger than the sum of its proper divisors (1).

40320420168487 is an equidigital number, since it uses as much as digits as its factorization.

40320420168487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 49.

The spelling of 40320420168487 in words is "forty trillion, three hundred twenty billion, four hundred twenty million, one hundred sixty-eight thousand, four hundred eighty-seven".