1278927116208 has 180 divisors, whose sum is σ = 4185385296768. Its totient is φ = 363494234880.

The previous prime is 1278927116191. The next prime is 1278927116209. The reversal of 1278927116208 is 8026117298721.

1278927116208 is a `hidden beast` number, since 1 + 2 + 7 + 8 + 9 + 2 + 7 + 1 + 1 + 620 + 8 = 666.

It is a super-2 number, since 2×1278927116208² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1278927116209) 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 35 ways as a sum of consecutive naturals, for example, 873210 + ... + 1822182.

Almost surely, 2^{1278927116208} is an apocalyptic number.

1278927116208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1278927116208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2092692648384).

1278927116208 is an abundant number, since it is smaller than the sum of its proper divisors (2906458180560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1278927116208 is a wasteful number, since it uses less digits than its factorization.

1278927116208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949192 (or 949176 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 1278927116208 in words is "one trillion, two hundred seventy-eight billion, nine hundred twenty-seven million, one hundred sixteen thousand, two hundred eight".