21303360054 has 48 divisors (see below), whose sum is σ = 47281208832. Its totient is φ = 6928561584.

The previous prime is 21303360031. The next prime is 21303360103. The reversal of 21303360054 is 45006330312.

It is a happy number.

21303360054 is a `hidden beast` number, since 2 + 1 + 3 + 0 + 3 + 3 + 600 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 734227 + ... + 762689.

It is an arithmetic number, because the mean of its divisors is an integer number (985025184).

Almost surely, 2^21303360054 is an apocalyptic number.

21303360054 is an abundant number, since it is smaller than the sum of its proper divisors (25977848778).

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

21303360054 is a wasteful number, since it uses less digits than its factorization.

21303360054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29481 (or 29478 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 21303360054 its reverse (45006330312), we get a palindrome (66309690366).

The spelling of 21303360054 in words is "twenty-one billion, three hundred three million, three hundred sixty thousand, fifty-four".