20444543100116 has 6 divisors (see below), whose sum is σ = 35777950425210. Its totient is φ = 10222271550056.

The previous prime is 20444543100071. The next prime is 20444543100131. The reversal of 20444543100116 is 61100134544402.

It can be written as a sum of positive squares in only one way, i.e., 18387458563600 + 2057084536516 = 4288060^2 + 1434254^2 .

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, 2555567887511 + ... + 2555567887518.

It is an arithmetic number, because the mean of its divisors is an integer number (5962991737535).

Almost surely, 2^{20444543100116} is an apocalyptic number.

It is an amenable number.

20444543100116 is a deficient number, since it is larger than the sum of its proper divisors (15333407325094).

20444543100116 is a wasteful number, since it uses less digits than its factorization.

20444543100116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111135775033 (or 5111135775031 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 20444543100116 its reverse (61100134544402), we get a palindrome (81544677644518).

The spelling of 20444543100116 in words is "twenty trillion, four hundred forty-four billion, five hundred forty-three million, one hundred thousand, one hundred sixteen".