2666422642 has 32 divisors (see below), whose sum is σ = 4378727808. Its totient is φ = 1210382976.

The previous prime is 2666422639. The next prime is 2666422657. The reversal of 2666422642 is 2462246662.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2666422595 and 2666422604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500163 + ... + 505465.

It is an arithmetic number, because the mean of its divisors is an integer number (136835244).

Almost surely, 2^2666422642 is an apocalyptic number.

2666422642 is a deficient number, since it is larger than the sum of its proper divisors (1712305166).

2666422642 is a wasteful number, since it uses less digits than its factorization.

2666422642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634.

The product of its digits is 331776, while the sum is 40.

The square root of 2666422642 is about 51637.4151367010. The cubic root of 2666422642 is about 1386.6802480975.

The spelling of 2666422642 in words is "two billion, six hundred sixty-six million, four hundred twenty-two thousand, six hundred forty-two".