66145225002 has 16 divisors (see below), whose sum is σ = 132768036192. Its totient is φ = 21968810640.

The previous prime is 66145225001. The next prime is 66145225007. The reversal of 66145225002 is 20052254166.

It is not an unprimeable number, because it can be changed into a prime (66145225001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19897624 + ... + 19900947.

It is an arithmetic number, because the mean of its divisors is an integer number (8298002262).

Almost surely, 2^66145225002 is an apocalyptic number.

66145225002 is an abundant number, since it is smaller than the sum of its proper divisors (66622811190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66145225002 is a wasteful number, since it uses less digits than its factorization.

66145225002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39798853.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 66145225002 its reverse (20052254166), we get a palindrome (86197479168).

The spelling of 66145225002 in words is "sixty-six billion, one hundred forty-five million, two hundred twenty-five thousand, two".