51542203533242 has 8 divisors (see below), whose sum is σ = 77315253888000. Its totient is φ = 25770452237244.

The previous prime is 51542203533241. The next prime is 51542203533319. The reversal of 51542203533242 is 24233530224515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51542203533242.

It is not an unprimeable number, because it can be changed into a prime (51542203533241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324665492 + ... + 324824207.

It is an arithmetic number, because the mean of its divisors is an integer number (9664406736000).

Almost surely, 2^{51542203533242} is an apocalyptic number.

51542203533242 is a deficient number, since it is larger than the sum of its proper divisors (25773050354758).

51542203533242 is a wasteful number, since it uses less digits than its factorization.

51542203533242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649529380.

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 51542203533242 its reverse (24233530224515), we get a palindrome (75775733757757).

The spelling of 51542203533242 in words is "fifty-one trillion, five hundred forty-two billion, two hundred three million, five hundred thirty-three thousand, two hundred forty-two".