1542431656443 has 16 divisors (see below), whose sum is σ = 2165016585600. Its totient is φ = 974077260480.

The previous prime is 1542431656433. The next prime is 1542431656457. The reversal of 1542431656443 is 3446561342451.

It is not a de Polignac number, because 1542431656443 - 2⁴ = 1542431656427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1542431656392 and 1542431656401.

It is not an unprimeable number, because it can be changed into a prime (1542431656433) 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, 627018 + ... + 1864943.

It is an arithmetic number, because the mean of its divisors is an integer number (135313536600).

Almost surely, 2^{1542431656443} is an apocalyptic number.

1542431656443 is a deficient number, since it is larger than the sum of its proper divisors (622584929157).

1542431656443 is a wasteful number, since it uses less digits than its factorization.

1542431656443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502842.

The product of its digits is 4147200, while the sum is 48.

Adding to 1542431656443 its reverse (3446561342451), we get a palindrome (4988992998894).

The spelling of 1542431656443 in words is "one trillion, five hundred forty-two billion, four hundred thirty-one million, six hundred fifty-six thousand, four hundred forty-three".