21034035255 has 16 divisors (see below), whose sum is σ = 34370509824. Its totient is φ = 10979467680.

The previous prime is 21034035241. The next prime is 21034035257. The reversal of 21034035255 is 55253043012.

It is not a de Polignac number, because 21034035255 - 2⁸ = 21034034999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034035257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14917051 + ... + 14918460.

It is an arithmetic number, because the mean of its divisors is an integer number (2148156864).

Almost surely, 2^21034035255 is an apocalyptic number.

21034035255 is a deficient number, since it is larger than the sum of its proper divisors (13336474569).

21034035255 is a wasteful number, since it uses less digits than its factorization.

21034035255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29835566.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 21034035255 its reverse (55253043012), we get a palindrome (76287078267).

The spelling of 21034035255 in words is "twenty-one billion, thirty-four million, thirty-five thousand, two hundred fifty-five".