2778605155118 has 12 divisors (see below), whose sum is σ = 4513178196288. Its totient is φ = 1282433148360.

The previous prime is 2778605155103. The next prime is 2778605155159. The reversal of 2778605155118 is 8115515068772.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 4110362318 + ... + 4110362993.

It is an arithmetic number, because the mean of its divisors is an integer number (376098183024).

Almost surely, 2^{2778605155118} is an apocalyptic number.

2778605155118 is a deficient number, since it is larger than the sum of its proper divisors (1734573041170).

2778605155118 is a wasteful number, since it uses less digits than its factorization.

2778605155118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220725339 (or 8220725326 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 56.

The spelling of 2778605155118 in words is "two trillion, seven hundred seventy-eight billion, six hundred five million, one hundred fifty-five thousand, one hundred eighteen".