20106105616 has 15 divisors (see below), whose sum is σ = 38956678581. Its totient is φ = 10052769216.

The previous prime is 20106105587. The next prime is 20106105637. The reversal of 20106105616 is 61650160102.

The square root of 20106105616 is 141796.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7055328016 + 13050777600 = 83996^2 + 114240^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 549460 + ... + 584908.

Almost surely, 2^20106105616 is an apocalyptic number.

20106105616 is the 141796-th square number.

It is an amenable number.

20106105616 is a deficient number, since it is larger than the sum of its proper divisors (18850572965).

20106105616 is an frugal number, since it uses more digits than its factorization.

20106105616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70906 (or 35451 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 20106105616 its reverse (61650160102), we get a palindrome (81756265718).

The spelling of 20106105616 in words is "twenty billion, one hundred six million, one hundred five thousand, six hundred sixteen".