2668935778 has 16 divisors (see below), whose sum is σ = 4180968576. Its totient is φ = 1275376960.

The previous prime is 2668935761. The next prime is 2668935809. The reversal of 2668935778 is 8775398662.

2668935778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32538 + ... + 79978.

It is an arithmetic number, because the mean of its divisors is an integer number (261310536).

Almost surely, 2^2668935778 is an apocalyptic number.

2668935778 is a deficient number, since it is larger than the sum of its proper divisors (1512032798).

2668935778 is a wasteful number, since it uses less digits than its factorization.

2668935778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48689.

The product of its digits is 30481920, while the sum is 61.

The square root of 2668935778 is about 51661.7438536486. The cubic root of 2668935778 is about 1387.1157656721.

The spelling of 2668935778 in words is "two billion, six hundred sixty-eight million, nine hundred thirty-five thousand, seven hundred seventy-eight".