16143253453 has 4 divisors (see below), whose sum is σ = 16225199100. Its totient is φ = 16061307808.

The previous prime is 16143253447. The next prime is 16143253463. The reversal of 16143253453 is 35435234161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35435234161 = 121843 ⋅290827.

It can be written as a sum of positive squares in 2 ways, for example, as 7799892489 + 8343360964 = 88317^2 + 91342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16143253453 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 (16143253403) 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, 40972528 + ... + 40972921.

It is an arithmetic number, because the mean of its divisors is an integer number (4056299775).

Almost surely, 2^16143253453 is an apocalyptic number.

It is an amenable number.

16143253453 is a deficient number, since it is larger than the sum of its proper divisors (81945647).

16143253453 is an equidigital number, since it uses as much as digits as its factorization.

16143253453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81945646.

The product of its digits is 129600, while the sum is 37.

The spelling of 16143253453 in words is "sixteen billion, one hundred forty-three million, two hundred fifty-three thousand, four hundred fifty-three".