2170388851706 has 16 divisors (see below), whose sum is σ = 3331797320544. Its totient is φ = 1059797363184.

The previous prime is 2170388851691. The next prime is 2170388851733. The reversal of 2170388851706 is 6071588830712.

It is a super-2 number, since 2×2170388851706² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1330460 + ... + 2472023.

It is an arithmetic number, because the mean of its divisors is an integer number (208237332534).

Almost surely, 2^{2170388851706} is an apocalyptic number.

2170388851706 is a deficient number, since it is larger than the sum of its proper divisors (1161408468838).

2170388851706 is a wasteful number, since it uses less digits than its factorization.

2170388851706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809165.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The spelling of 2170388851706 in words is "two trillion, one hundred seventy billion, three hundred eighty-eight million, eight hundred fifty-one thousand, seven hundred six".