2177968917776 has 20 divisors (see below), whose sum is σ = 4309598072832. Its totient is φ = 1065814576416.

The previous prime is 2177968917731. The next prime is 2177968917799. The reversal of 2177968917776 is 6777198697712.

It is a junction number, because it is equal to n+sod(n) for n = 2177968917697 and 2177968917706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448116880 + ... + 1448118383.

Almost surely, 2^{2177968917776} is an apocalyptic number.

It is an amenable number.

2177968917776 is a deficient number, since it is larger than the sum of its proper divisors (2131629155056).

2177968917776 is a wasteful number, since it uses less digits than its factorization.

2177968917776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896235318 (or 2896235312 counting only the distinct ones).

The product of its digits is 784147392, while the sum is 77.

The spelling of 2177968917776 in words is "two trillion, one hundred seventy-seven billion, nine hundred sixty-eight million, nine hundred seventeen thousand, seven hundred seventy-six".