21910941359 has 4 divisors (see below), whose sum is σ = 21913108320. Its totient is φ = 21908774400.

The previous prime is 21910941347. The next prime is 21910941361. The reversal of 21910941359 is 95314901912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21910941359 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 (21910941259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068242 + ... + 1088559.

It is an arithmetic number, because the mean of its divisors is an integer number (5478277080).

Almost surely, 2^21910941359 is an apocalyptic number.

21910941359 is a deficient number, since it is larger than the sum of its proper divisors (2166961).

21910941359 is a wasteful number, since it uses less digits than its factorization.

21910941359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166960.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 21910941359 in words is "twenty-one billion, nine hundred ten million, nine hundred forty-one thousand, three hundred fifty-nine".