21041433055 has 32 divisors (see below), whose sum is σ = 28019957760. Its totient is φ = 15104309760.

The previous prime is 21041433041. The next prime is 21041433059. The reversal of 21041433055 is 55033414012.

It is not a de Polignac number, because 21041433055 - 2⁹ = 21041432543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041433059) 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, 62407 + ... + 214423.

It is an arithmetic number, because the mean of its divisors is an integer number (875623680).

Almost surely, 2^21041433055 is an apocalyptic number.

21041433055 is a deficient number, since it is larger than the sum of its proper divisors (6978524705).

21041433055 is a wasteful number, since it uses less digits than its factorization.

21041433055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152119.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 21041433055 its reverse (55033414012), we get a palindrome (76074847067).

The spelling of 21041433055 in words is "twenty-one billion, forty-one million, four hundred thirty-three thousand, fifty-five".