66606666833051 has 8 divisors (see below), whose sum is σ = 67230787449600. Its totient is φ = 65982576372328.

The previous prime is 66606666833023. The next prime is 66606666833059. The reversal of 66606666833051 is 15033866660666.

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

It is a cyclic number.

It is not a de Polignac number, because 66606666833051 - 2⁶ = 66606666832987 is a prime.

It is a super-2 number, since 2×66606666833051² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66606666833059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3088511 + ... + 11947896.

It is an arithmetic number, because the mean of its divisors is an integer number (8403848431200).

Almost surely, 2^{66606666833051} is an apocalyptic number.

66606666833051 is a deficient number, since it is larger than the sum of its proper divisors (624120616549).

66606666833051 is a wasteful number, since it uses less digits than its factorization.

66606666833051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15077913.

The product of its (nonzero) digits is 100776960, while the sum is 62.

The spelling of 66606666833051 in words is "sixty-six trillion, six hundred six billion, six hundred sixty-six million, eight hundred thirty-three thousand, fifty-one".