21253346501336 has 16 divisors (see below), whose sum is σ = 39850112309040. Its totient is φ = 10626649885600.

The previous prime is 21253346501327. The next prime is 21253346501389. The reversal of 21253346501336 is 63310564335212.

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, 1304861 + ... + 6649011.

It is an arithmetic number, because the mean of its divisors is an integer number (2490632019315).

Almost surely, 2^{21253346501336} is an apocalyptic number.

It is an amenable number.

21253346501336 is a deficient number, since it is larger than the sum of its proper divisors (18596765807704).

21253346501336 is a wasteful number, since it uses less digits than its factorization.

21253346501336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841274 (or 5841270 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 21253346501336 in words is "twenty-one trillion, two hundred fifty-three billion, three hundred forty-six million, five hundred one thousand, three hundred thirty-six".