21711983241 has 8 divisors (see below), whose sum is σ = 31176181120. Its totient is φ = 13361220432.

The previous prime is 21711983207. The next prime is 21711983243. The reversal of 21711983241 is 14238911712.

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

It is not a de Polignac number, because 21711983241 - 2⁷ = 21711983113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 556717519 = 21711983241 / (2 + 1 + 7 + 1 + 1 + 9 + 8 + 3 + 2 + 4 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21711983241.

It is not an unprimeable number, because it can be changed into a prime (21711983243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278358721 + ... + 278358798.

It is an arithmetic number, because the mean of its divisors is an integer number (3897022640).

Almost surely, 2^21711983241 is an apocalyptic number.

It is an amenable number.

21711983241 is a deficient number, since it is larger than the sum of its proper divisors (9464197879).

21711983241 is a wasteful number, since it uses less digits than its factorization.

21711983241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556717535.

The product of its digits is 24192, while the sum is 39.

The spelling of 21711983241 in words is "twenty-one billion, seven hundred eleven million, nine hundred eighty-three thousand, two hundred forty-one".