2154430543453 has 4 divisors (see below), whose sum is σ = 2155277746368. Its totient is φ = 2153583340540.

The previous prime is 2154430543387. The next prime is 2154430543519. The reversal of 2154430543453 is 3543450344512.

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 an interprime number because it is at equal distance from previous prime (2154430543387) and next prime (2154430543519).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154430543453 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 (2154430543553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423597643 + ... + 423602728.

It is an arithmetic number, because the mean of its divisors is an integer number (538819436592).

Almost surely, 2^{2154430543453} is an apocalyptic number.

It is an amenable number.

2154430543453 is a deficient number, since it is larger than the sum of its proper divisors (847202915).

2154430543453 is an equidigital number, since it uses as much as digits as its factorization.

2154430543453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847202914.

The product of its (nonzero) digits is 1728000, while the sum is 43.

Adding to 2154430543453 its reverse (3543450344512), we get a palindrome (5697880887965).

The spelling of 2154430543453 in words is "two trillion, one hundred fifty-four billion, four hundred thirty million, five hundred forty-three thousand, four hundred fifty-three".