2778005502778 has 16 divisors (see below), whose sum is σ = 4590835380000. Its totient is φ = 1250227498000.

The previous prime is 2778005502751. The next prime is 2778005502787. The reversal of 2778005502778 is 8772055008772.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 625111528 + ... + 625115971.

It is an arithmetic number, because the mean of its divisors is an integer number (286927211250).

Almost surely, 2^{2778005502778} is an apocalyptic number.

2778005502778 is a deficient number, since it is larger than the sum of its proper divisors (1812829877222).

2778005502778 is a wasteful number, since it uses less digits than its factorization.

2778005502778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250227613.

The product of its (nonzero) digits is 15366400, while the sum is 58.

The spelling of 2778005502778 in words is "two trillion, seven hundred seventy-eight billion, five million, five hundred two thousand, seven hundred seventy-eight".