1543664130542 has 4 divisors (see below), whose sum is σ = 2315496195816. Its totient is φ = 771832065270.

The previous prime is 1543664130539. The next prime is 1543664130587. The reversal of 1543664130542 is 2450314663451.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1543664130493 and 1543664130502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385916032634 + ... + 385916032637.

It is an arithmetic number, because the mean of its divisors is an integer number (578874048954).

Almost surely, 2^{1543664130542} is an apocalyptic number.

1543664130542 is a deficient number, since it is larger than the sum of its proper divisors (771832065274).

1543664130542 is an equidigital number, since it uses as much as digits as its factorization.

1543664130542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771832065273.

The product of its (nonzero) digits is 1036800, while the sum is 44.

Adding to 1543664130542 its reverse (2450314663451), we get a palindrome (3993978793993).

The spelling of 1543664130542 in words is "one trillion, five hundred forty-three billion, six hundred sixty-four million, one hundred thirty thousand, five hundred forty-two".