21535503422 has 8 divisors (see below), whose sum is σ = 32305384272. Its totient is φ = 10767042000.

The previous prime is 21535503419. The next prime is 21535503487. The reversal of 21535503422 is 22430553512.

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

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, 316079 + ... + 378122.

It is an arithmetic number, because the mean of its divisors is an integer number (4038173034).

Almost surely, 2^21535503422 is an apocalyptic number.

21535503422 is a deficient number, since it is larger than the sum of its proper divisors (10769880850).

21535503422 is a wasteful number, since it uses less digits than its factorization.

21535503422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709714.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 21535503422 in words is "twenty-one billion, five hundred thirty-five million, five hundred three thousand, four hundred twenty-two".