66508853311670 has 64 divisors (see below), whose sum is σ = 150090065856000. Its totient is φ = 20614221922560.

The previous prime is 66508853311661. The next prime is 66508853311699. The reversal of 66508853311670 is 7611335880566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241133495 + ... + 241409154.

It is an arithmetic number, because the mean of its divisors is an integer number (2345157279000).

Almost surely, 2^{66508853311670} is an apocalyptic number.

66508853311670 is an abundant number, since it is smaller than the sum of its proper divisors (83581212544330).

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

66508853311670 is a wasteful number, since it uses less digits than its factorization.

66508853311670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482542853.

The product of its (nonzero) digits is 21772800, while the sum is 59.

The spelling of 66508853311670 in words is "sixty-six trillion, five hundred eight billion, eight hundred fifty-three million, three hundred eleven thousand, six hundred seventy".