66065502701 has 4 divisors (see below), whose sum is σ = 72071457504. Its totient is φ = 60059547900.

The previous prime is 66065502667. The next prime is 66065502733. The reversal of 66065502701 is 10720556066.

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 de Polignac number, because none of the positive numbers 2^k-66065502701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66065502791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3002977385 + ... + 3002977406.

It is an arithmetic number, because the mean of its divisors is an integer number (18017864376).

Almost surely, 2^66065502701 is an apocalyptic number.

It is an amenable number.

66065502701 is a deficient number, since it is larger than the sum of its proper divisors (6005954803).

66065502701 is a wasteful number, since it uses less digits than its factorization.

66065502701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005954802.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 66065502701 in words is "sixty-six billion, sixty-five million, five hundred two thousand, seven hundred one".