66151681286 has 16 divisors (see below), whose sum is σ = 101947219584. Its totient is φ = 32169939264.

The previous prime is 66151681261. The next prime is 66151681319. The reversal of 66151681286 is 68218615166.

It is a super-2 number, since 2×66151681286² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 36011 + ... + 365513.

It is an arithmetic number, because the mean of its divisors is an integer number (6371701224).

Almost surely, 2^66151681286 is an apocalyptic number.

66151681286 is a deficient number, since it is larger than the sum of its proper divisors (35795538298).

66151681286 is a wasteful number, since it uses less digits than its factorization.

66151681286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332255.

The product of its digits is 829440, while the sum is 50.

The spelling of 66151681286 in words is "sixty-six billion, one hundred fifty-one million, six hundred eighty-one thousand, two hundred eighty-six".