1542448438511 has 4 divisors (see below), whose sum is σ = 1545299545224. Its totient is φ = 1539597331800.

The previous prime is 1542448438493. The next prime is 1542448438519. The reversal of 1542448438511 is 1158348442451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542448438511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1542448438511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542448438519) 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, 1425552545 + ... + 1425553626.

It is an arithmetic number, because the mean of its divisors is an integer number (386324886306).

Almost surely, 2^{1542448438511} is an apocalyptic number.

1542448438511 is a deficient number, since it is larger than the sum of its proper divisors (2851106713).

1542448438511 is an equidigital number, since it uses as much as digits as its factorization.

1542448438511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851106712.

The product of its digits is 2457600, while the sum is 50.

The spelling of 1542448438511 in words is "one trillion, five hundred forty-two billion, four hundred forty-eight million, four hundred thirty-eight thousand, five hundred eleven".