2195775881669 has 24 divisors (see below), whose sum is σ = 2428599908616. Its totient is φ = 1983154176000.

The previous prime is 2195775881659. The next prime is 2195775881681. The reversal of 2195775881669 is 9661885775912.

It can be written as a sum of positive squares in 12 ways, for example, as 1589654464225 + 606121417444 = 1260815^2 + 778538^2 .

It is not a de Polignac number, because 2195775881669 - 2³² = 2191480914373 is a prime.

It is a super-2 number, since 2×2195775881669² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2195775881596 and 2195775881605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195775881659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 796172 + ... + 2241749.

It is an arithmetic number, because the mean of its divisors is an integer number (101191662859).

Almost surely, 2^{2195775881669} is an apocalyptic number.

It is an amenable number.

2195775881669 is a deficient number, since it is larger than the sum of its proper divisors (232824026947).

2195775881669 is a wasteful number, since it uses less digits than its factorization.

2195775881669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038057 (or 3038040 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 74.

The spelling of 2195775881669 in words is "two trillion, one hundred ninety-five billion, seven hundred seventy-five million, eight hundred eighty-one thousand, six hundred sixty-nine".