66420462406 has 8 divisors (see below), whose sum is σ = 99637585200. Its totient is φ = 33207934008.

The previous prime is 66420462401. The next prime is 66420462473. The reversal of 66420462406 is 60426402466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66420462401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112226 + ... + 1170421.

It is an arithmetic number, because the mean of its divisors is an integer number (12454698150).

Almost surely, 2^66420462406 is an apocalyptic number.

66420462406 is a deficient number, since it is larger than the sum of its proper divisors (33217122794).

66420462406 is a wasteful number, since it uses less digits than its factorization.

66420462406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297198.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 66420462406 in words is "sixty-six billion, four hundred twenty million, four hundred sixty-two thousand, four hundred six".