16451256253 has 4 divisors (see below), whose sum is σ = 17166528288. Its totient is φ = 15735984220.

The previous prime is 16451256251. The next prime is 16451256259. The reversal of 16451256253 is 35265215461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16451256253 - 2¹ = 16451256251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16451256251) 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, 357635983 + ... + 357636028.

It is an arithmetic number, because the mean of its divisors is an integer number (4291632072).

Almost surely, 2^16451256253 is an apocalyptic number.

It is an amenable number.

16451256253 is a deficient number, since it is larger than the sum of its proper divisors (715272035).

16451256253 is an equidigital number, since it uses as much as digits as its factorization.

16451256253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715272034.

The product of its digits is 216000, while the sum is 40.

The spelling of 16451256253 in words is "sixteen billion, four hundred fifty-one million, two hundred fifty-six thousand, two hundred fifty-three".