66405152027 has 8 divisors (see below), whose sum is σ = 66662600400. Its totient is φ = 66147854080.

The previous prime is 66405152017. The next prime is 66405152039. The reversal of 66405152027 is 72025150466.

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 66405152027 - 2¹⁰ = 66405151003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66405152017) 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, 891203 + ... + 962835.

It is an arithmetic number, because the mean of its divisors is an integer number (8332825050).

Almost surely, 2^66405152027 is an apocalyptic number.

66405152027 is a deficient number, since it is larger than the sum of its proper divisors (257448373).

66405152027 is a wasteful number, since it uses less digits than its factorization.

66405152027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75213.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 66405152027 in words is "sixty-six billion, four hundred five million, one hundred fifty-two thousand, twenty-seven".