1278288016996 has 27 divisors (see below), whose sum is σ = 2361017124921. Its totient is φ = 605484499104.

The previous prime is 1278288016961. The next prime is 1278288016997. The reversal of 1278288016996 is 6996108828721.

The square root of 1278288016996 is 1130614.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1249409772900 + 28878244096 = 1117770^2 + 169936^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1278288016997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42948456 + ... + 42978208.

Almost surely, 2^{1278288016996} is an apocalyptic number.

1278288016996 is the 1130614-th square number.

It is an amenable number.

1278288016996 is a deficient number, since it is larger than the sum of its proper divisors (1082729107925).

1278288016996 is an frugal number, since it uses more digits than its factorization.

1278288016996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59548 (or 29774 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 67.

The spelling of 1278288016996 in words is "one trillion, two hundred seventy-eight billion, two hundred eighty-eight million, sixteen thousand, nine hundred ninety-six".