21441123575 has 6 divisors (see below), whose sum is σ = 26586993264. Its totient is φ = 17152898840.

The previous prime is 21441123547. The next prime is 21441123661. The reversal of 21441123575 is 57532114412.

It is not a de Polignac number, because 21441123575 - 2⁶ = 21441123511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 428822447 + ... + 428822496.

It is an arithmetic number, because the mean of its divisors is an integer number (4431165544).

Almost surely, 2^21441123575 is an apocalyptic number.

21441123575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21441123575 is a deficient number, since it is larger than the sum of its proper divisors (5145869689).

21441123575 is an equidigital number, since it uses as much as digits as its factorization.

21441123575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857644953 (or 857644948 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

Adding to 21441123575 its reverse (57532114412), we get a palindrome (78973237987).

The spelling of 21441123575 in words is "twenty-one billion, four hundred forty-one million, one hundred twenty-three thousand, five hundred seventy-five".