2173887370216 has 32 divisors (see below), whose sum is σ = 4175618678280. Its totient is φ = 1060391142400.

The previous prime is 2173887370183. The next prime is 2173887370289. The reversal of 2173887370216 is 6120737883712.

It can be written as a sum of positive squares in 4 ways, for example, as 815138122500 + 1358749247716 = 902850^2 + 1165654^2 .

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, 9245340 + ... + 9477556.

Almost surely, 2^{2173887370216} is an apocalyptic number.

It is an amenable number.

2173887370216 is a deficient number, since it is larger than the sum of its proper divisors (2001731308064).

2173887370216 is a wasteful number, since it uses less digits than its factorization.

2173887370216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260805 (or 260801 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 2173887370216 in words is "two trillion, one hundred seventy-three billion, eight hundred eighty-seven million, three hundred seventy thousand, two hundred sixteen".