2778777889005 has 32 divisors (see below), whose sum is σ = 4470127607808. Its totient is φ = 1473996686400.

The previous prime is 2778777888967. The next prime is 2778777889007. The reversal of 2778777889005 is 5009887778772.

2778777889005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2778777889005 - 2¹⁰ = 2778777887981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778777889007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4411140 + ... + 5001570.

It is an arithmetic number, because the mean of its divisors is an integer number (139691487744).

Almost surely, 2^{2778777889005} is an apocalyptic number.

It is an amenable number.

2778777889005 is a deficient number, since it is larger than the sum of its proper divisors (1691349718803).

2778777889005 is a wasteful number, since it uses less digits than its factorization.

2778777889005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592137.

The product of its (nonzero) digits is 774466560, while the sum is 75.

The spelling of 2778777889005 in words is "two trillion, seven hundred seventy-eight billion, seven hundred seventy-seven million, eight hundred eighty-nine thousand, five".