2668778800 has 30 divisors (see below), whose sum is σ = 6411742028. Its totient is φ = 1067511360.

The previous prime is 2668778771. The next prime is 2668778807. The reversal of 2668778800 is 88778662.

It is not an unprimeable number, because it can be changed into a prime (2668778807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3335574 + ... + 3336373.

Almost surely, 2^2668778800 is an apocalyptic number.

2668778800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2668778800 is an abundant number, since it is smaller than the sum of its proper divisors (3742963228).

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

2668778800 is a wasteful number, since it uses less digits than its factorization.

2668778800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671965 (or 6671954 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 2668778800 is about 51660.2245446146. The cubic root of 2668778800 is about 1387.0885699475.

The spelling of 2668778800 in words is "two billion, six hundred sixty-eight million, seven hundred seventy-eight thousand, eight hundred".