21054300626 has 16 divisors (see below), whose sum is σ = 31703560704. Its totient is φ = 10486472304.

The previous prime is 21054300581. The next prime is 21054300667. The reversal of 21054300626 is 62600345012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2960591 + ... + 2967693.

It is an arithmetic number, because the mean of its divisors is an integer number (1981472544).

Almost surely, 2^21054300626 is an apocalyptic number.

21054300626 is a deficient number, since it is larger than the sum of its proper divisors (10649260078).

21054300626 is a wasteful number, since it uses less digits than its factorization.

21054300626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 21054300626 its reverse (62600345012), we get a palindrome (83654645638).

The spelling of 21054300626 in words is "twenty-one billion, fifty-four million, three hundred thousand, six hundred twenty-six".