2778355473 has 8 divisors (see below), whose sum is σ = 3739095648. Its totient is φ = 1834926144.

The previous prime is 2778355451. The next prime is 2778355499. The reversal of 2778355473 is 3745538772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2778355473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2778355423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4327336 + ... + 4327977.

It is an arithmetic number, because the mean of its divisors is an integer number (467386956).

Almost surely, 2^2778355473 is an apocalyptic number.

It is an amenable number.

2778355473 is a deficient number, since it is larger than the sum of its proper divisors (960740175).

2778355473 is a wasteful number, since it uses less digits than its factorization.

2778355473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655423.

The product of its digits is 4939200, while the sum is 51.

The square root of 2778355473 is about 52710.1078826443. The cubic root of 2778355473 is about 1405.8185514857.

The spelling of 2778355473 in words is "two billion, seven hundred seventy-eight million, three hundred fifty-five thousand, four hundred seventy-three".