21805474360294 has 8 divisors (see below), whose sum is σ = 32708267692200. Its totient is φ = 10902718462896.

The previous prime is 21805474360291. The next prime is 21805474360309. The reversal of 21805474360294 is 49206347450812.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21805474360291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7854004 + ... + 10261399.

It is an arithmetic number, because the mean of its divisors is an integer number (4088533461525).

It is a 2-persistent number, because it is pandigital, and so is 2⋅21805474360294 = 43610948720588, but 3⋅21805474360294 = 65416423080882 is not.

Almost surely, 2^{21805474360294} is an apocalyptic number.

21805474360294 is a deficient number, since it is larger than the sum of its proper divisors (10902793331906).

21805474360294 is a wasteful number, since it uses less digits than its factorization.

21805474360294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18717254.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 21805474360294 in words is "twenty-one trillion, eight hundred five billion, four hundred seventy-four million, three hundred sixty thousand, two hundred ninety-four".