2106054816669 has 40 divisors (see below), whose sum is σ = 3326516202240. Its totient is φ = 1324174915584.

The previous prime is 2106054816661. The next prime is 2106054816757. The reversal of 2106054816669 is 9666184506012.

It is not a de Polignac number, because 2106054816669 - 2³ = 2106054816661 is a prime.

It is a super-2 number, since 2×2106054816669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106054816661) 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 39 ways as a sum of consecutive naturals, for example, 2725092 + ... + 3411485.

It is an arithmetic number, because the mean of its divisors is an integer number (83162905056).

Almost surely, 2^{2106054816669} is an apocalyptic number.

It is an amenable number.

2106054816669 is a deficient number, since it is larger than the sum of its proper divisors (1220461385571).

2106054816669 is a wasteful number, since it uses less digits than its factorization.

2106054816669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136831 (or 6136822 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 2106054816669 in words is "two trillion, one hundred six billion, fifty-four million, eight hundred sixteen thousand, six hundred sixty-nine".