21024503535353 has 4 divisors (see below), whose sum is σ = 21702713326848. Its totient is φ = 20346293743860.

The previous prime is 21024503535337. The next prime is 21024503535359. The reversal of 21024503535353 is 35353530542012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21024503535353 - 2⁴ = 21024503535337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21024503535353.

It is not an unprimeable number, because it can be changed into a prime (21024503535359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339104895701 + ... + 339104895762.

It is an arithmetic number, because the mean of its divisors is an integer number (5425678331712).

Almost surely, 2^{21024503535353} is an apocalyptic number.

It is an amenable number.

21024503535353 is a deficient number, since it is larger than the sum of its proper divisors (678209791495).

21024503535353 is an equidigital number, since it uses as much as digits as its factorization.

21024503535353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678209791494.

The product of its (nonzero) digits is 810000, while the sum is 41.

The spelling of 21024503535353 in words is "twenty-one trillion, twenty-four billion, five hundred three million, five hundred thirty-five thousand, three hundred fifty-three".