66660576270 has 128 divisors (see below), whose sum is σ = 166755041280. Its totient is φ = 17035920000.

The previous prime is 66660576247. The next prime is 66660576293. The reversal of 66660576270 is 7267506666.

66660576270 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 (66660576247) and next prime (66660576293).

It is a super-2 number, since 2×66660576270² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67265475 + ... + 67266465.

It is an arithmetic number, because the mean of its divisors is an integer number (1302773760).

Almost surely, 2^66660576270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66660576270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83377520640).

66660576270 is an abundant number, since it is smaller than the sum of its proper divisors (100094465010).

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

66660576270 is a wasteful number, since it uses less digits than its factorization.

66660576270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 66660576270 in words is "sixty-six billion, six hundred sixty million, five hundred seventy-six thousand, two hundred seventy".