2778055525555 has 16 divisors (see below), whose sum is σ = 3529805510880. Its totient is φ = 2091688192512.

The previous prime is 2778055525529. The next prime is 2778055525559. The reversal of 2778055525555 is 5555255508772.

It is a cyclic number.

It is not a de Polignac number, because 2778055525555 - 2²⁹ = 2777518654643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2778055525493 and 2778055525502.

It is not an unprimeable number, because it can be changed into a prime (2778055525559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11239612 + ... + 11484118.

It is an arithmetic number, because the mean of its divisors is an integer number (220612844430).

Almost surely, 2^{2778055525555} is an apocalyptic number.

2778055525555 is a deficient number, since it is larger than the sum of its proper divisors (751749985325).

2778055525555 is a wasteful number, since it uses less digits than its factorization.

2778055525555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378198.

The product of its (nonzero) digits is 122500000, while the sum is 61.

The spelling of 2778055525555 in words is "two trillion, seven hundred seventy-eight billion, fifty-five million, five hundred twenty-five thousand, five hundred fifty-five".