66006420463 has 2 divisors, whose sum is σ = 66006420464. Its totient is φ = 66006420462.

The previous prime is 66006420461. The next prime is 66006420503. The reversal of 66006420463 is 36402460066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66006420463 - 2¹ = 66006420461 is a prime.

Together with 66006420461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66006420461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33003210231 + 33003210232.

It is an arithmetic number, because the mean of its divisors is an integer number (33003210232).

Almost surely, 2^66006420463 is an apocalyptic number.

66006420463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66006420463 is an equidigital number, since it uses as much as digits as its factorization.

66006420463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 66006420463 in words is "sixty-six billion, six million, four hundred twenty thousand, four hundred sixty-three".