21477320343311 has 8 divisors (see below), whose sum is σ = 24547796821920. Its totient is φ = 18407415829248.

The previous prime is 21477320343251. The next prime is 21477320343337. The reversal of 21477320343311 is 11334302377412.

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 21477320343311 - 2⁶ = 21477320343247 is a prime.

It is a super-2 number, since 2×21477320343311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21477320342311) 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, 142910666 + ... + 143060871.

It is an arithmetic number, because the mean of its divisors is an integer number (3068474602740).

Almost surely, 2^{21477320343311} is an apocalyptic number.

21477320343311 is a deficient number, since it is larger than the sum of its proper divisors (3070476478609).

21477320343311 is a wasteful number, since it uses less digits than its factorization.

21477320343311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285982273.

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 21477320343311 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred twenty million, three hundred forty-three thousand, three hundred eleven".