6541204515242 has 4 divisors (see below), whose sum is σ = 9811806772866. Its totient is φ = 3270602257620.

The previous prime is 6541204515233. The next prime is 6541204515257. The reversal of 6541204515242 is 2425154021456.

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

It can be written as a sum of positive squares in only one way, i.e., 6353177343601 + 188027171641 = 2520551^2 + 433621^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6541204515242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635301128809 + ... + 1635301128812.

Almost surely, 2^{6541204515242} is an apocalyptic number.

6541204515242 is a deficient number, since it is larger than the sum of its proper divisors (3270602257624).

6541204515242 is a wasteful number, since it uses less digits than its factorization.

6541204515242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270602257623.

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 6541204515242 its reverse (2425154021456), we get a palindrome (8966358536698).

The spelling of 6541204515242 in words is "six trillion, five hundred forty-one billion, two hundred four million, five hundred fifteen thousand, two hundred forty-two".