21440525054333 has 32 divisors (see below), whose sum is σ = 26816074555392. Its totient is φ = 16653832272000.

The previous prime is 21440525054287. The next prime is 21440525054453. The reversal of 21440525054333 is 33345052504412.

It is not a de Polignac number, because 21440525054333 - 2¹⁶ = 21440524988797 is a prime.

It is a super-2 number, since 2×21440525054333² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21440525054233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34739033 + ... + 35350833.

It is an arithmetic number, because the mean of its divisors is an integer number (838002329856).

Almost surely, 2^{21440525054333} is an apocalyptic number.

It is an amenable number.

21440525054333 is a deficient number, since it is larger than the sum of its proper divisors (5375549501059).

21440525054333 is a wasteful number, since it uses less digits than its factorization.

21440525054333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613265.

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 21440525054333 its reverse (33345052504412), we get a palindrome (54785577558745).

The spelling of 21440525054333 in words is "twenty-one trillion, four hundred forty billion, five hundred twenty-five million, fifty-four thousand, three hundred thirty-three".