21332434510653 has 48 divisors (see below), whose sum is σ = 34338212288640. Its totient is φ = 11538042268032.

The previous prime is 21332434510633. The next prime is 21332434510711. The reversal of 21332434510653 is 35601543423312.

It is not a de Polignac number, because 21332434510653 - 2⁸ = 21332434510397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332434510633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7208383 + ... + 9727571.

It is an arithmetic number, because the mean of its divisors is an integer number (715379422680).

Almost surely, 2^{21332434510653} is an apocalyptic number.

It is an amenable number.

21332434510653 is a deficient number, since it is larger than the sum of its proper divisors (13005777777987).

21332434510653 is a wasteful number, since it uses less digits than its factorization.

21332434510653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520354 (or 2520335 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 21332434510653 its reverse (35601543423312), we get a palindrome (56933977933965).

The spelling of 21332434510653 in words is "twenty-one trillion, three hundred thirty-two billion, four hundred thirty-four million, five hundred ten thousand, six hundred fifty-three".