66205232013 has 16 divisors (see below), whose sum is σ = 89951912640. Its totient is φ = 43297922304.

The previous prime is 66205232011. The next prime is 66205232087. The reversal of 66205232013 is 31023250266.

It is not a de Polignac number, because 66205232013 - 2¹ = 66205232011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66205232011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1279870 + ... + 1330592.

It is an arithmetic number, because the mean of its divisors is an integer number (5621994540).

Almost surely, 2^66205232013 is an apocalyptic number.

It is an amenable number.

66205232013 is a deficient number, since it is larger than the sum of its proper divisors (23746680627).

66205232013 is a wasteful number, since it uses less digits than its factorization.

66205232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58988.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 66205232013 its reverse (31023250266), we get a palindrome (97228482279).

The spelling of 66205232013 in words is "sixty-six billion, two hundred five million, two hundred thirty-two thousand, thirteen".