66151418 has 16 divisors (see below), whose sum is σ = 100219680. Its totient is φ = 32746896.

The previous prime is 66151417. The next prime is 66151429. The reversal of 66151418 is 81415166.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66151411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149105 + ... + 149547.

It is an arithmetic number, because the mean of its divisors is an integer number (6263730).

Almost surely, 2^66151418 is an apocalyptic number.

66151418 is a deficient number, since it is larger than the sum of its proper divisors (34068262).

66151418 is a wasteful number, since it uses less digits than its factorization.

66151418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021.

The product of its digits is 5760, while the sum is 32.

The square root of 66151418 is about 8133.3521994317. The cubic root of 66151418 is about 404.4328147499.

The spelling of 66151418 in words is "sixty-six million, one hundred fifty-one thousand, four hundred eighteen".