21300563055 has 32 divisors (see below), whose sum is σ = 34601204160. Its totient is φ = 11187348480.

The previous prime is 21300563027. The next prime is 21300563069. The reversal of 21300563055 is 55036500312.

It is not a de Polignac number, because 21300563055 - 2¹² = 21300558959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 709081 + ... + 738509.

It is an arithmetic number, because the mean of its divisors is an integer number (1081287630).

Almost surely, 2^21300563055 is an apocalyptic number.

21300563055 is a deficient number, since it is larger than the sum of its proper divisors (13300641105).

21300563055 is a wasteful number, since it uses less digits than its factorization.

21300563055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171.

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 21300563055 in words is "twenty-one billion, three hundred million, five hundred sixty-three thousand, fifty-five".