21323251060650 has 288 divisors, whose sum is σ = 73085625220608. Its totient is φ = 4327763126400.

The previous prime is 21323251060649. The next prime is 21323251060663. The reversal of 21323251060650 is 5606015232312.

21323251060650 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 32 + 5 + 10 + 606 + 5 + 0 = 666.

It is a super-2 number, since 2×21323251060650² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5665744 + ... + 8645643.

It is an arithmetic number, because the mean of its divisors is an integer number (253769532016).

Almost surely, 2^{21323251060650} is an apocalyptic number.

21323251060650 is an abundant number, since it is smaller than the sum of its proper divisors (51762374159958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21323251060650 is a wasteful number, since it uses less digits than its factorization.

21323251060650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14311466 (or 14311458 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 21323251060650 its reverse (5606015232312), we get a palindrome (26929266292962).

The spelling of 21323251060650 in words is "twenty-one trillion, three hundred twenty-three billion, two hundred fifty-one million, sixty thousand, six hundred fifty".