66202249723 has 2 divisors, whose sum is σ = 66202249724. Its totient is φ = 66202249722.

The previous prime is 66202249679. The next prime is 66202249747. The reversal of 66202249723 is 32794220266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66202249723 - 2¹³ = 66202241531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66202249723.

It is not a weakly prime, because it can be changed into another prime (66202249783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33101124861 + 33101124862.

It is an arithmetic number, because the mean of its divisors is an integer number (33101124862).

Almost surely, 2^66202249723 is an apocalyptic number.

66202249723 is a deficient number, since it is larger than the sum of its proper divisors (1).

66202249723 is an equidigital number, since it uses as much as digits as its factorization.

66202249723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 43.

Adding to 66202249723 its reverse (32794220266), we get a palindrome (98996469989).

The spelling of 66202249723 in words is "sixty-six billion, two hundred two million, two hundred forty-nine thousand, seven hundred twenty-three".