20516441534293 has 8 divisors (see below), whose sum is σ = 20589694974936. Its totient is φ = 20443189804800.

The previous prime is 20516441534227. The next prime is 20516441534419. The reversal of 20516441534293 is 39243514461502.

It can be written as a sum of positive squares in 4 ways, for example, as 11028821815089 + 9487619719204 = 3320967^2 + 3080198^2 .

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 20516441534293 - 2¹⁷ = 20516441403221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516441534093) 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, 26647305 + ... + 27406417.

It is an arithmetic number, because the mean of its divisors is an integer number (2573711871867).

Almost surely, 2^{20516441534293} is an apocalyptic number.

It is an amenable number.

20516441534293 is a deficient number, since it is larger than the sum of its proper divisors (73253440643).

20516441534293 is an equidigital number, since it uses as much as digits as its factorization.

20516441534293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855575.

The product of its (nonzero) digits is 3110400, while the sum is 49.

Adding to 20516441534293 its reverse (39243514461502), we get a palindrome (59759955995795).

The spelling of 20516441534293 in words is "twenty trillion, five hundred sixteen billion, four hundred forty-one million, five hundred thirty-four thousand, two hundred ninety-three".