2778110645 has 8 divisors (see below), whose sum is σ = 3350486400. Its totient is φ = 2211319440.

The previous prime is 2778110623. The next prime is 2778110653. The reversal of 2778110645 is 5460118772.

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

It is not a de Polignac number, because 2778110645 - 2²⁴ = 2761333429 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1395041 + ... + 1397030.

It is an arithmetic number, because the mean of its divisors is an integer number (418810800).

Almost surely, 2^2778110645 is an apocalyptic number.

It is an amenable number.

2778110645 is a deficient number, since it is larger than the sum of its proper divisors (572375755).

2778110645 is a wasteful number, since it uses less digits than its factorization.

2778110645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792275.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 2778110645 is about 52707.7854306174. The cubic root of 2778110645 is about 1405.7772568112. Note that the first 3 decimals are identical.

The spelling of 2778110645 in words is "two billion, seven hundred seventy-eight million, one hundred ten thousand, six hundred forty-five".