2008779155 has 4 divisors (see below), whose sum is σ = 2410534992. Its totient is φ = 1607023320.

The previous prime is 2008779139. The next prime is 2008779169. The reversal of 2008779155 is 5519778002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5519778002 = 2 ⋅2759889001.

It is not a de Polignac number, because 2008779155 - 2⁴ = 2008779139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200877911 + ... + 200877920.

It is an arithmetic number, because the mean of its divisors is an integer number (602633748).

Almost surely, 2^2008779155 is an apocalyptic number.

2008779155 is a deficient number, since it is larger than the sum of its proper divisors (401755837).

2008779155 is an equidigital number, since it uses as much as digits as its factorization.

2008779155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401755836.

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 2008779155 is about 44819.4060090046. The cubic root of 2008779155 is about 1261.7618660789.

The spelling of 2008779155 in words is "two billion, eight million, seven hundred seventy-nine thousand, one hundred fifty-five".