66903945410 has 32 divisors (see below), whose sum is σ = 121264359552. Its totient is φ = 26576081280.

The previous prime is 66903945379. The next prime is 66903945413. The reversal of 66903945410 is 1454930966.

It is a happy number.

It is a super-2 number, since 2×66903945410² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66903945413) 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 15 ways as a sum of consecutive naturals, for example, 929579 + ... + 998961.

It is an arithmetic number, because the mean of its divisors is an integer number (3789511236).

Almost surely, 2^66903945410 is an apocalyptic number.

66903945410 is a deficient number, since it is larger than the sum of its proper divisors (54360414142).

66903945410 is a wasteful number, since it uses less digits than its factorization.

66903945410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70058.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 66903945410 in words is "sixty-six billion, nine hundred three million, nine hundred forty-five thousand, four hundred ten".