2178116552 has 8 divisors (see below), whose sum is σ = 4083968550. Its totient is φ = 1089058272.

The previous prime is 2178116519. The next prime is 2178116581. The reversal of 2178116552 is 2556118712.

It can be written as a sum of positive squares in only one way, i.e., 2122076356 + 56040196 = 46066^2 + 7486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136132277 + ... + 136132292.

Almost surely, 2^2178116552 is an apocalyptic number.

It is an amenable number.

2178116552 is a deficient number, since it is larger than the sum of its proper divisors (1905851998).

2178116552 is a wasteful number, since it uses less digits than its factorization.

2178116552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272264575 (or 272264571 counting only the distinct ones).

The product of its digits is 33600, while the sum is 38.

The square root of 2178116552 is about 46670.2962493276. The cubic root of 2178116552 is about 1296.2647318393.

The spelling of 2178116552 in words is "two billion, one hundred seventy-eight million, one hundred sixteen thousand, five hundred fifty-two".