64646004202066 has 8 divisors (see below), whose sum is σ = 110821721489280. Its totient is φ = 27705430372308.

The previous prime is 64646004202063. The next prime is 64646004202093. The reversal of 64646004202066 is 66020240064646.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (64646004202063) 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, 2308785864346 + ... + 2308785864373.

It is an arithmetic number, because the mean of its divisors is an integer number (13852715186160).

Almost surely, 2^{64646004202066} is an apocalyptic number.

64646004202066 is a deficient number, since it is larger than the sum of its proper divisors (46175717287214).

64646004202066 is a wasteful number, since it uses less digits than its factorization.

64646004202066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617571728728.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 64646004202066 in words is "sixty-four trillion, six hundred forty-six billion, four million, two hundred two thousand, sixty-six".