1234554541543 has 16 divisors (see below), whose sum is σ = 1246157255520. Its totient is φ = 1223020191744.

The previous prime is 1234554541531. The next prime is 1234554541547. The reversal of 1234554541543 is 3451454554321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1234554541543 - 2¹⁷ = 1234554410471 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1234554541493 and 1234554541502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234554541547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40338855 + ... + 40369447.

It is an arithmetic number, because the mean of its divisors is an integer number (77884828470).

Almost surely, 2^{1234554541543} is an apocalyptic number.

1234554541543 is a deficient number, since it is larger than the sum of its proper divisors (11602713977).

1234554541543 is a wasteful number, since it uses less digits than its factorization.

1234554541543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31698.

The product of its digits is 2880000, while the sum is 46.

The spelling of 1234554541543 in words is "one trillion, two hundred thirty-four billion, five hundred fifty-four million, five hundred forty-one thousand, five hundred forty-three".