21353535386932 has 36 divisors (see below), whose sum is σ = 43470587351520. Its totient is φ = 9151327731504.

The previous prime is 21353535386923. The next prime is 21353535387031. The reversal of 21353535386932 is 23968353535312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8698119 + ... + 10879537.

It is an arithmetic number, because the mean of its divisors is an integer number (1207516315320).

Almost surely, 2^{21353535386932} is an apocalyptic number.

It is an amenable number.

21353535386932 is an abundant number, since it is smaller than the sum of its proper divisors (22117051964588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21353535386932 is a wasteful number, since it uses less digits than its factorization.

21353535386932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231380 (or 2231371 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 58.

The spelling of 21353535386932 in words is "twenty-one trillion, three hundred fifty-three billion, five hundred thirty-five million, three hundred eighty-six thousand, nine hundred thirty-two".