666027615405129 has 16 divisors (see below), whose sum is σ = 890082511887360. Its totient is φ = 442995616481040.

The previous prime is 666027615405037. The next prime is 666027615405181. The reversal of 666027615405129 is 921504516720666.

It is not a de Polignac number, because 666027615405129 - 2²⁴ = 666027598627913 is a prime.

It is a super-3 number, since 3×666027615405129³ (a number of 45 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (666027615406129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45038124 + ... + 57969714.

It is an arithmetic number, because the mean of its divisors is an integer number (55630156992960).

Almost surely, 2^{666027615405129} is an apocalyptic number.

It is an amenable number.

666027615405129 is a deficient number, since it is larger than the sum of its proper divisors (224054896482231).

666027615405129 is a wasteful number, since it uses less digits than its factorization.

666027615405129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971140.

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 666027615405129 in words is "six hundred sixty-six trillion, twenty-seven billion, six hundred fifteen million, four hundred five thousand, one hundred twenty-nine".