66141144064 has 44 divisors (see below), whose sum is σ = 132253853328. Its totient is φ = 33061529600.

The previous prime is 66141144059. The next prime is 66141144073. The reversal of 66141144064 is 46044114166.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5288859 + ... + 5301349.

Almost surely, 2^66141144064 is an apocalyptic number.

66141144064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66141144064 is a deficient number, since it is larger than the sum of its proper divisors (66112709264).

66141144064 is a wasteful number, since it uses less digits than its factorization.

66141144064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17682 (or 17664 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 66141144064 in words is "sixty-six billion, one hundred forty-one million, one hundred forty-four thousand, sixty-four".