2178263714128 has 10 divisors (see below), whose sum is σ = 4220385946154. Its totient is φ = 1089131857056.

The previous prime is 2178263714093. The next prime is 2178263714149. The reversal of 2178263714128 is 8214173628712.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1952760297744 + 225503416384 = 1397412^2 + 474872^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68070741051 + ... + 68070741082.

Almost surely, 2^{2178263714128} is an apocalyptic number.

It is an amenable number.

2178263714128 is a deficient number, since it is larger than the sum of its proper divisors (2042122232026).

2178263714128 is a wasteful number, since it uses less digits than its factorization.

2178263714128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136141482141 (or 136141482135 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The spelling of 2178263714128 in words is "two trillion, one hundred seventy-eight billion, two hundred sixty-three million, seven hundred fourteen thousand, one hundred twenty-eight".