66124081266 has 16 divisors (see below), whose sum is σ = 132262387488. Its totient is φ = 22038989600.

The previous prime is 66124081217. The next prime is 66124081307. The reversal of 66124081266 is 66218042166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531795 + ... + 644246.

It is an arithmetic number, because the mean of its divisors is an integer number (8266399218).

Almost surely, 2^66124081266 is an apocalyptic number.

66124081266 is an abundant number, since it is smaller than the sum of its proper divisors (66138306222).

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

66124081266 is a wasteful number, since it uses less digits than its factorization.

66124081266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185417.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 66124081266 in words is "sixty-six billion, one hundred twenty-four million, eighty-one thousand, two hundred sixty-six".