66140110408 has 32 divisors (see below), whose sum is σ = 124608096000. Its totient is φ = 32911557120.

The previous prime is 66140110391. The next prime is 66140110423. The reversal of 66140110408 is 80401104166.

It is a self number, because there is not a number n which added to its sum of digits gives 66140110408.

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, 1997653 + ... + 2030491.

It is an arithmetic number, because the mean of its divisors is an integer number (3894003000).

Almost surely, 2^66140110408 is an apocalyptic number.

It is an amenable number.

66140110408 is a deficient number, since it is larger than the sum of its proper divisors (58467985592).

66140110408 is a wasteful number, since it uses less digits than its factorization.

66140110408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34045 (or 34041 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 66140110408 in words is "sixty-six billion, one hundred forty million, one hundred ten thousand, four hundred eight".