21160211543 has 8 divisors (see below), whose sum is σ = 21988041600. Its totient is φ = 20338926048.

The previous prime is 21160211537. The next prime is 21160211581. The reversal of 21160211543 is 34511206112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21160211543 - 2²⁰ = 21159162967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160211143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629548 + ... + 1642481.

It is an arithmetic number, because the mean of its divisors is an integer number (2748505200).

Almost surely, 2^21160211543 is an apocalyptic number.

21160211543 is a deficient number, since it is larger than the sum of its proper divisors (827830057).

21160211543 is a wasteful number, since it uses less digits than its factorization.

21160211543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272281.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 21160211543 its reverse (34511206112), we get a palindrome (55671417655).

The spelling of 21160211543 in words is "twenty-one billion, one hundred sixty million, two hundred eleven thousand, five hundred forty-three".