16440810253 has 4 divisors (see below), whose sum is σ = 18789497440. Its totient is φ = 14092123068.

The previous prime is 16440810241. The next prime is 16440810271. The reversal of 16440810253 is 35201804461.

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 16440810253 - 2²¹ = 16438713101 is a prime.

It is a super-3 number, since 3×16440810253³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440810283) 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, 1174343583 + ... + 1174343596.

It is an arithmetic number, because the mean of its divisors is an integer number (4697374360).

Almost surely, 2^16440810253 is an apocalyptic number.

It is an amenable number.

16440810253 is a deficient number, since it is larger than the sum of its proper divisors (2348687187).

16440810253 is an equidigital number, since it uses as much as digits as its factorization.

16440810253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348687186.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 16440810253 in words is "sixteen billion, four hundred forty million, eight hundred ten thousand, two hundred fifty-three".