21245135350053 has 8 divisors (see below), whose sum is σ = 28607310966816. Its totient is φ = 14023191650000.

The previous prime is 21245135350027. The next prime is 21245135350099. The reversal of 21245135350053 is 35005353154212.

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

It is a cyclic number.

It is not a de Polignac number, because 21245135350053 - 2¹⁷ = 21245135218981 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21245135349993 and 21245135350020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21245135352053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35057978823 + ... + 35057979428.

It is an arithmetic number, because the mean of its divisors is an integer number (3575913870852).

Almost surely, 2^{21245135350053} is an apocalyptic number.

It is an amenable number.

21245135350053 is a deficient number, since it is larger than the sum of its proper divisors (7362175616763).

21245135350053 is a wasteful number, since it uses less digits than its factorization.

21245135350053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70115958355.

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 21245135350053 in words is "twenty-one trillion, two hundred forty-five billion, one hundred thirty-five million, three hundred fifty thousand, fifty-three".