2779982478 has 64 divisors (see below), whose sum is σ = 7603384320. Its totient is φ = 733180896.

The previous prime is 2779982467. The next prime is 2779982497. The reversal of 2779982478 is 8742899772.

2779982478 is a `hidden beast` number, since 2 + 7 + 79 + 98 + 2 + 478 = 666.

2779982478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277950 + ... + 287777.

It is an arithmetic number, because the mean of its divisors is an integer number (118802880).

Almost surely, 2^2779982478 is an apocalyptic number.

2779982478 is an abundant number, since it is smaller than the sum of its proper divisors (4823401842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2779982478 is a wasteful number, since it uses less digits than its factorization.

2779982478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565758 (or 565752 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 2779982478 is about 52725.5391437584. The cubic root of 2779982478 is about 1406.0929137243.

The spelling of 2779982478 in words is "two billion, seven hundred seventy-nine million, nine hundred eighty-two thousand, four hundred seventy-eight".