6651252133243 has 4 divisors (see below), whose sum is σ = 6653801485080. Its totient is φ = 6648702781408.

The previous prime is 6651252133223. The next prime is 6651252133247. The reversal of 6651252133243 is 3423312521566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651252133243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6651252133243.

It is not an unprimeable number, because it can be changed into a prime (6651252133247) 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, 1274672005 + ... + 1274677222.

It is an arithmetic number, because the mean of its divisors is an integer number (1663450371270).

Almost surely, 2^{6651252133243} is an apocalyptic number.

6651252133243 is a deficient number, since it is larger than the sum of its proper divisors (2549351837).

6651252133243 is a wasteful number, since it uses less digits than its factorization.

6651252133243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549351836.

The product of its digits is 777600, while the sum is 43.

The spelling of 6651252133243 in words is "six trillion, six hundred fifty-one billion, two hundred fifty-two million, one hundred thirty-three thousand, two hundred forty-three".