16501541253 has 4 divisors (see below), whose sum is σ = 22002055008. Its totient is φ = 11001027500.

The previous prime is 16501541219. The next prime is 16501541263. The reversal of 16501541253 is 35214510561.

16501541253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16501541253 - 2²⁸ = 16233105797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501541213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750256873 + ... + 2750256878.

It is an arithmetic number, because the mean of its divisors is an integer number (5500513752).

Almost surely, 2^16501541253 is an apocalyptic number.

It is an amenable number.

16501541253 is a deficient number, since it is larger than the sum of its proper divisors (5500513755).

16501541253 is an equidigital number, since it uses as much as digits as its factorization.

16501541253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500513754.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 16501541253 in words is "sixteen billion, five hundred one million, five hundred forty-one thousand, two hundred fifty-three".