666000010051601 has 8 divisors (see below), whose sum is σ = 701055944039520. Its totient is φ = 630944406251712.

The previous prime is 666000010051591. The next prime is 666000010051643. The reversal of 666000010051601 is 106150010000666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666000010051601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666000010051661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78401435 + ... + 86479968.

It is an arithmetic number, because the mean of its divisors is an integer number (87631993004940).

Almost surely, 2^{666000010051601} is an apocalyptic number.

It is an amenable number.

666000010051601 is a deficient number, since it is larger than the sum of its proper divisors (35055933987919).

666000010051601 is a wasteful number, since it uses less digits than its factorization.

666000010051601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165094015.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 666000010051601 in words is "six hundred sixty-six trillion, ten million, fifty-one thousand, six hundred one".