21413250060542 has 4 divisors (see below), whose sum is σ = 32119875090816. Its totient is φ = 10706625030270.

The previous prime is 21413250060533. The next prime is 21413250060583. The reversal of 21413250060542 is 24506005231412.

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

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, 5353312515134 + ... + 5353312515137.

It is an arithmetic number, because the mean of its divisors is an integer number (8029968772704).

Almost surely, 2^{21413250060542} is an apocalyptic number.

21413250060542 is a deficient number, since it is larger than the sum of its proper divisors (10706625030274).

21413250060542 is a wasteful number, since it uses less digits than its factorization.

21413250060542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10706625030273.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 21413250060542 its reverse (24506005231412), we get a palindrome (45919255291954).

The spelling of 21413250060542 in words is "twenty-one trillion, four hundred thirteen billion, two hundred fifty million, sixty thousand, five hundred forty-two".