2154042303453 has 6 divisors (see below), whose sum is σ = 3111394438334. Its totient is φ = 1436028202296.

The previous prime is 2154042303443. The next prime is 2154042303487. The reversal of 2154042303453 is 3543032404512.

2154042303453 is a `hidden beast` number, since 2 + 1 + 540 + 4 + 2 + 30 + 34 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2079470709369 + 74571594084 = 1442037^2 + 273078^2 .

It is not a de Polignac number, because 2154042303453 - 2⁵ = 2154042303421 is a prime.

It is a super-2 number, since 2×2154042303453² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154042303433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119669016850 + ... + 119669016867.

Almost surely, 2^{2154042303453} is an apocalyptic number.

It is an amenable number.

2154042303453 is a deficient number, since it is larger than the sum of its proper divisors (957352134881).

2154042303453 is a wasteful number, since it uses less digits than its factorization.

2154042303453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239338033723 (or 239338033720 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 2154042303453 its reverse (3543032404512), we get a palindrome (5697074707965).

The spelling of 2154042303453 in words is "two trillion, one hundred fifty-four billion, forty-two million, three hundred three thousand, four hundred fifty-three".