21323330415542 has 8 divisors (see below), whose sum is σ = 32435488519632. Its totient is φ = 10511500909000.

The previous prime is 21323330415449. The next prime is 21323330415551. The reversal of 21323330415542 is 24551403332312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21323330415496 and 21323330415505.

It is a congruent number.

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, 75082149209 + ... + 75082149492.

It is an arithmetic number, because the mean of its divisors is an integer number (4054436064954).

Almost surely, 2^{21323330415542} is an apocalyptic number.

21323330415542 is a deficient number, since it is larger than the sum of its proper divisors (11112158104090).

21323330415542 is a wasteful number, since it uses less digits than its factorization.

21323330415542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150164298774.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 21323330415542 its reverse (24551403332312), we get a palindrome (45874733747854).

The spelling of 21323330415542 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty million, four hundred fifteen thousand, five hundred forty-two".