4251661322253 has 16 divisors (see below), whose sum is σ = 5722050734400. Its totient is φ = 2807944865280.

The previous prime is 4251661322123. The next prime is 4251661322333. The reversal of 4251661322253 is 3522231661524.

It is not a de Polignac number, because 4251661322253 - 2⁸ = 4251661321997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251661322053) 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, 10866148 + ... + 11250621.

It is an arithmetic number, because the mean of its divisors is an integer number (357628170900).

Almost surely, 2^{4251661322253} is an apocalyptic number.

It is an amenable number.

4251661322253 is a deficient number, since it is larger than the sum of its proper divisors (1470389412147).

4251661322253 is a wasteful number, since it uses less digits than its factorization.

4251661322253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22117372.

The product of its digits is 518400, while the sum is 42.

Adding to 4251661322253 its reverse (3522231661524), we get a palindrome (7773892983777).

The spelling of 4251661322253 in words is "four trillion, two hundred fifty-one billion, six hundred sixty-one million, three hundred twenty-two thousand, two hundred fifty-three".