13542143215522 has 8 divisors (see below), whose sum is σ = 20316948200172. Its totient is φ = 6769827148800.

The previous prime is 13542143215519. The next prime is 13542143215553. The reversal of 13542143215522 is 22551234124531.

It can be written as a sum of positive squares in 2 ways, for example, as 10654995111601 + 2887148103921 = 3264199^2 + 1699161^2 .

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

It is a super-4 number, since 4×13542143215522⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622215879 + ... + 622237642.

Almost surely, 2^{13542143215522} is an apocalyptic number.

13542143215522 is a deficient number, since it is larger than the sum of its proper divisors (6774804984650).

13542143215522 is a wasteful number, since it uses less digits than its factorization.

13542143215522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244458964.

The product of its digits is 288000, while the sum is 40.

Subtracting 13542143215522 from its reverse (22551234124531), we obtain a palindrome (9009090909009).

The spelling of 13542143215522 in words is "thirteen trillion, five hundred forty-two billion, one hundred forty-three million, two hundred fifteen thousand, five hundred twenty-two".