2106291669169 has 4 divisors (see below), whose sum is σ = 2107372374900. Its totient is φ = 2105210963440.

The previous prime is 2106291669161. The next prime is 2106291669179. The reversal of 2106291669169 is 9619661926012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1479008661025 + 627283008144 = 1216145^2 + 792012^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106291669169 - 2³ = 2106291669161 is a prime.

It is a super-2 number, since 2×2106291669169² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106291669161) 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, 540349942 + ... + 540353839.

It is an arithmetic number, because the mean of its divisors is an integer number (526843093725).

Almost surely, 2^{2106291669169} is an apocalyptic number.

It is an amenable number.

2106291669169 is a deficient number, since it is larger than the sum of its proper divisors (1080705731).

2106291669169 is a wasteful number, since it uses less digits than its factorization.

2106291669169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080705730.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 2106291669169 in words is "two trillion, one hundred six billion, two hundred ninety-one million, six hundred sixty-nine thousand, one hundred sixty-nine".