66428168930 has 8 divisors (see below), whose sum is σ = 119570704092. Its totient is φ = 26571267568.

The previous prime is 66428168903. The next prime is 66428169007. The reversal of 66428168930 is 3986182466.

It can be written as a sum of positive squares in 2 ways, for example, as 61077685321 + 5350483609 = 247139^2 + 73147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3321408437 + ... + 3321408456.

Almost surely, 2^66428168930 is an apocalyptic number.

66428168930 is a deficient number, since it is larger than the sum of its proper divisors (53142535162).

66428168930 is a wasteful number, since it uses less digits than its factorization.

66428168930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6642816900.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 66428168930 in words is "sixty-six billion, four hundred twenty-eight million, one hundred sixty-eight thousand, nine hundred thirty".