2251304163533 has 16 divisors (see below), whose sum is σ = 2316553905600. Its totient is φ = 2187041356800.

The previous prime is 2251304163529. The next prime is 2251304163553. The reversal of 2251304163533 is 3353614031522.

It is a cyclic number.

It is not a de Polignac number, because 2251304163533 - 2² = 2251304163529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251304163553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2755373 + ... + 3477741.

It is an arithmetic number, because the mean of its divisors is an integer number (144784619100).

Almost surely, 2^{2251304163533} is an apocalyptic number.

It is an amenable number.

2251304163533 is a deficient number, since it is larger than the sum of its proper divisors (65249742067).

2251304163533 is a wasteful number, since it uses less digits than its factorization.

2251304163533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723052.

The product of its (nonzero) digits is 194400, while the sum is 38.

The spelling of 2251304163533 in words is "two trillion, two hundred fifty-one billion, three hundred four million, one hundred sixty-three thousand, five hundred thirty-three".