66248604205 has 32 divisors (see below), whose sum is σ = 91224921600. Its totient is φ = 45243152640.

The previous prime is 66248604203. The next prime is 66248604209. The reversal of 66248604205 is 50240684266.

It is not a de Polignac number, because 66248604205 - 2¹ = 66248604203 is a prime.

It is a super-2 number, since 2×66248604205² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66248604203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9530071 + ... + 9537019.

It is an arithmetic number, because the mean of its divisors is an integer number (2850778800).

Almost surely, 2^66248604205 is an apocalyptic number.

It is an amenable number.

66248604205 is a deficient number, since it is larger than the sum of its proper divisors (24976317395).

66248604205 is a wasteful number, since it uses less digits than its factorization.

66248604205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8029.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 66248604205 in words is "sixty-six billion, two hundred forty-eight million, six hundred four thousand, two hundred five".