2171105606657 has 8 divisors (see below), whose sum is σ = 2338602227136. Its totient is φ = 2003678771472.

The previous prime is 2171105606639. The next prime is 2171105606669. The reversal of 2171105606657 is 7566065011712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2171105606657 - 2³⁸ = 1896227699713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171105605657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17381693 + ... + 17506154.

It is an arithmetic number, because the mean of its divisors is an integer number (292325278392).

Almost surely, 2^{2171105606657} is an apocalyptic number.

It is an amenable number.

2171105606657 is a deficient number, since it is larger than the sum of its proper divisors (167496620479).

2171105606657 is a wasteful number, since it uses less digits than its factorization.

2171105606657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34892647.

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 2171105606657 in words is "two trillion, one hundred seventy-one billion, one hundred five million, six hundred six thousand, six hundred fifty-seven".