2100171663 has 12 divisors (see below), whose sum is σ = 3131439168. Its totient is φ = 1354949280.

The previous prime is 2100171649. The next prime is 2100171683. The reversal of 2100171663 is 3661710012.

It is not a de Polignac number, because 2100171663 - 2¹² = 2100167567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100171683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3763470 + ... + 3764027.

It is an arithmetic number, because the mean of its divisors is an integer number (260953264).

Almost surely, 2^2100171663 is an apocalyptic number.

2100171663 is a deficient number, since it is larger than the sum of its proper divisors (1031267505).

2100171663 is a wasteful number, since it uses less digits than its factorization.

2100171663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527534 (or 7527531 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2100171663 is about 45827.6299081678. The cubic root of 2100171663 is about 1280.6140573798.

Adding to 2100171663 its reverse (3661710012), we get a palindrome (5761881675).

The spelling of 2100171663 in words is "two billion, one hundred million, one hundred seventy-one thousand, six hundred sixty-three".