2206690881671 has 16 divisors (see below), whose sum is σ = 2280665613600. Its totient is φ = 2133751603200.

The previous prime is 2206690881649. The next prime is 2206690881719. The reversal of 2206690881671 is 1761880966022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2206690881671 - 2¹⁸ = 2206690619527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206690881611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37985255 + ... + 38043303.

It is an arithmetic number, because the mean of its divisors is an integer number (142541600850).

Almost surely, 2^{2206690881671} is an apocalyptic number.

2206690881671 is a deficient number, since it is larger than the sum of its proper divisors (73974731929).

2206690881671 is a wasteful number, since it uses less digits than its factorization.

2206690881671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66946.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 2206690881671 in words is "two trillion, two hundred six billion, six hundred ninety million, eight hundred eighty-one thousand, six hundred seventy-one".