21734210341263 has 24 divisors (see below), whose sum is σ = 33825255751728. Its totient is φ = 12377161203456.

The previous prime is 21734210341247. The next prime is 21734210341387. The reversal of 21734210341263 is 36214301243712.

It is not a de Polignac number, because 21734210341263 - 2⁴ = 21734210341247 is a prime.

It is a super-5 number, since 5×21734210341263⁵ (a number of 68 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21734210341213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252263706 + ... + 252349847.

It is an arithmetic number, because the mean of its divisors is an integer number (1409385656322).

Almost surely, 2^{21734210341263} is an apocalyptic number.

21734210341263 is a deficient number, since it is larger than the sum of its proper divisors (12091045410465).

21734210341263 is a wasteful number, since it uses less digits than its factorization.

21734210341263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504613863 (or 504613856 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

Adding to 21734210341263 its reverse (36214301243712), we get a palindrome (57948511584975).

The spelling of 21734210341263 in words is "twenty-one trillion, seven hundred thirty-four billion, two hundred ten million, three hundred forty-one thousand, two hundred sixty-three".