21671046305039 has 8 divisors (see below), whose sum is σ = 21707459542080. Its totient is φ = 21634650493600.

The previous prime is 21671046305017. The next prime is 21671046305093. The reversal of 21671046305039 is 93050364017612.

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 21671046305039 - 2⁸ = 21671046304783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21671046304984 and 21671046305002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21671046335039) 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 7 ways as a sum of consecutive naturals, for example, 1865852 + ... + 6842769.

It is an arithmetic number, because the mean of its divisors is an integer number (2713432442760).

Almost surely, 2^{21671046305039} is an apocalyptic number.

21671046305039 is a deficient number, since it is larger than the sum of its proper divisors (36413237041).

21671046305039 is an equidigital number, since it uses as much as digits as its factorization.

21671046305039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712801.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 21671046305039 in words is "twenty-one trillion, six hundred seventy-one billion, forty-six million, three hundred five thousand, thirty-nine".