2166874676772 has 24 divisors (see below), whose sum is σ = 5444967136896. Its totient is φ = 666730669728.

The previous prime is 2166874676753. The next prime is 2166874676773. The reversal of 2166874676772 is 2776764786612.

It is a junction number, because it is equal to n+sod(n) for n = 2166874676697 and 2166874676706.

It is not an unprimeable number, because it can be changed into a prime (2166874676773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6945110988 + ... + 6945111299.

It is an arithmetic number, because the mean of its divisors is an integer number (226873630704).

Almost surely, 2^{2166874676772} is an apocalyptic number.

It is an amenable number.

2166874676772 is an abundant number, since it is smaller than the sum of its proper divisors (3278092460124).

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

2166874676772 is a wasteful number, since it uses less digits than its factorization.

2166874676772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13890222307 (or 13890222305 counting only the distinct ones).

The product of its digits is 398297088, while the sum is 69.

The spelling of 2166874676772 in words is "two trillion, one hundred sixty-six billion, eight hundred seventy-four million, six hundred seventy-six thousand, seven hundred seventy-two".