2755277780778 has 32 divisors (see below), whose sum is σ = 6123332761920. Its totient is φ = 918351939600.

The previous prime is 2755277780771. The next prime is 2755277780807. The reversal of 2755277780778 is 8770877725572.

2755277780778 is a `hidden beast` number, since 27 + 5 + 527 + 7 + 7 + 8 + 0 + 7 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (2755277780771) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1376625 + ... + 2721332.

It is an arithmetic number, because the mean of its divisors is an integer number (191354148810).

Almost surely, 2^{2755277780778} is an apocalyptic number.

2755277780778 is an abundant number, since it is smaller than the sum of its proper divisors (3368054981142).

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

2755277780778 is a wasteful number, since it uses less digits than its factorization.

2755277780778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110419 (or 4110413 counting only the distinct ones).

The product of its (nonzero) digits is 752953600, while the sum is 72.

The spelling of 2755277780778 in words is "two trillion, seven hundred fifty-five billion, two hundred seventy-seven million, seven hundred eighty thousand, seven hundred seventy-eight".