21354727216411 has 8 divisors (see below), whose sum is σ = 21907653360624. Its totient is φ = 20808344577120.

The previous prime is 21354727216397. The next prime is 21354727216519. The reversal of 21354727216411 is 11461272745312.

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 21354727216411 - 2⁵ = 21354727216379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21354728216411) 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, 1635869620 + ... + 1635882673.

It is an arithmetic number, because the mean of its divisors is an integer number (2738456670078).

Almost surely, 2^{21354727216411} is an apocalyptic number.

21354727216411 is a deficient number, since it is larger than the sum of its proper divisors (552926144213).

21354727216411 is a wasteful number, since it uses less digits than its factorization.

21354727216411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271752461.

The product of its digits is 564480, while the sum is 46.

The spelling of 21354727216411 in words is "twenty-one trillion, three hundred fifty-four billion, seven hundred twenty-seven million, two hundred sixteen thousand, four hundred eleven".