21635260532 has 12 divisors (see below), whose sum is σ = 37864802976. Its totient is φ = 10816745400.

The previous prime is 21635260489. The next prime is 21635260541. The reversal of 21635260532 is 23506253612.

It is a junction number, because it is equal to n+sod(n) for n = 21635260492 and 21635260501.

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, 164594 + ... + 265257.

It is an arithmetic number, because the mean of its divisors is an integer number (3155400248).

Almost surely, 2^21635260532 is an apocalyptic number.

It is an amenable number.

21635260532 is a deficient number, since it is larger than the sum of its proper divisors (16229542444).

21635260532 is a wasteful number, since it uses less digits than its factorization.

21635260532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442438 (or 442436 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 21635260532 in words is "twenty-one billion, six hundred thirty-five million, two hundred sixty thousand, five hundred thirty-two".