66101440073 has 4 divisors (see below), whose sum is σ = 66113396688. Its totient is φ = 66089483460.

The previous prime is 66101440039. The next prime is 66101440091. The reversal of 66101440073 is 37004410166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66101440073 - 2¹⁸ = 66101177929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66101445073) by changing a digit.

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, 5970011 + ... + 5981072.

It is an arithmetic number, because the mean of its divisors is an integer number (16528349172).

Almost surely, 2^66101440073 is an apocalyptic number.

It is an amenable number.

66101440073 is a deficient number, since it is larger than the sum of its proper divisors (11956615).

66101440073 is a wasteful number, since it uses less digits than its factorization.

66101440073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11956614.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 66101440073 in words is "sixty-six billion, one hundred one million, four hundred forty thousand, seventy-three".