666137713005270 has 192 divisors, whose sum is σ = 1893786162428160. Its totient is φ = 161113899091200.

The previous prime is 666137713005241. The next prime is 666137713005299. The reversal of 666137713005270 is 72500317731666.

666137713005270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (666137713005241) and next prime (666137713005299).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3203297437 + ... + 3203505383.

It is an arithmetic number, because the mean of its divisors is an integer number (9863469595980).

Almost surely, 2^{666137713005270} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666137713005270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946893081214080).

666137713005270 is an abundant number, since it is smaller than the sum of its proper divisors (1227648449422890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666137713005270 is a wasteful number, since it uses less digits than its factorization.

666137713005270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215451 (or 215448 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 54.

The spelling of 666137713005270 in words is "six hundred sixty-six trillion, one hundred thirty-seven billion, seven hundred thirteen million, five thousand, two hundred seventy".