66411621014 has 16 divisors (see below), whose sum is σ = 105605798976. Its totient is φ = 31214448000.

The previous prime is 66411621007. The next prime is 66411621019. The reversal of 66411621014 is 41012611466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66411621019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161662 + ... + 1217489.

It is an arithmetic number, because the mean of its divisors is an integer number (6600362436).

Almost surely, 2^66411621014 is an apocalyptic number.

66411621014 is a deficient number, since it is larger than the sum of its proper divisors (39194177962).

66411621014 is a wasteful number, since it uses less digits than its factorization.

66411621014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379991.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 66411621014 in words is "sixty-six billion, four hundred eleven million, six hundred twenty-one thousand, fourteen".