21350503535353 has 12 divisors (see below), whose sum is σ = 22668287261760. Its totient is φ = 20105674246296.

The previous prime is 21350503535321. The next prime is 21350503535369. The reversal of 21350503535353 is 35353530505312.

It is not a de Polignac number, because 21350503535353 - 2⁵ = 21350503535321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21350503535303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177013573 + ... + 177134146.

It is an arithmetic number, because the mean of its divisors is an integer number (1889023938480).

Almost surely, 2^{21350503535353} is an apocalyptic number.

It is an amenable number.

21350503535353 is a deficient number, since it is larger than the sum of its proper divisors (1317783726407).

21350503535353 is a wasteful number, since it uses less digits than its factorization.

21350503535353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354147924 (or 354147905 counting only the distinct ones).

The product of its (nonzero) digits is 1518750, while the sum is 43.

The spelling of 21350503535353 in words is "twenty-one trillion, three hundred fifty billion, five hundred three million, five hundred thirty-five thousand, three hundred fifty-three".