21086568416294 has 4 divisors (see below), whose sum is σ = 31629852624444. Its totient is φ = 10543284208146.

The previous prime is 21086568416233. The next prime is 21086568416323. The reversal of 21086568416294 is 49261486568012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5271642104072 + ... + 5271642104075.

It is an arithmetic number, because the mean of its divisors is an integer number (7907463156111).

Almost surely, 2^{21086568416294} is an apocalyptic number.

21086568416294 is a deficient number, since it is larger than the sum of its proper divisors (10543284208150).

21086568416294 is a wasteful number, since it uses less digits than its factorization.

21086568416294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543284208149.

The product of its (nonzero) digits is 39813120, while the sum is 62.

The spelling of 21086568416294 in words is "twenty-one trillion, eighty-six billion, five hundred sixty-eight million, four hundred sixteen thousand, two hundred ninety-four".