21450143341 has 4 divisors (see below), whose sum is σ = 23400156384. Its totient is φ = 19500130300.

The previous prime is 21450143339. The next prime is 21450143353. The reversal of 21450143341 is 14334105412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21450143341 - 2¹ = 21450143339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21450143041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975006505 + ... + 975006526.

It is an arithmetic number, because the mean of its divisors is an integer number (5850039096).

Almost surely, 2^21450143341 is an apocalyptic number.

It is an amenable number.

21450143341 is a deficient number, since it is larger than the sum of its proper divisors (1950013043).

21450143341 is a wasteful number, since it uses less digits than its factorization.

21450143341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950013042.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21450143341 its reverse (14334105412), we get a palindrome (35784248753).

The spelling of 21450143341 in words is "twenty-one billion, four hundred fifty million, one hundred forty-three thousand, three hundred forty-one".