2178422208452 has 24 divisors (see below), whose sum is σ = 4507080432960. Its totient is φ = 901416085920.

The previous prime is 2178422208427. The next prime is 2178422208509. The reversal of 2178422208452 is 2548022248712.

It is a junction number, because it is equal to n+sod(n) for n = 2178422208397 and 2178422208406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1341392174 + ... + 1341393797.

It is an arithmetic number, because the mean of its divisors is an integer number (187795018040).

Almost surely, 2^{2178422208452} is an apocalyptic number.

It is an amenable number.

2178422208452 is an abundant number, since it is smaller than the sum of its proper divisors (2328658224508).

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

2178422208452 is a wasteful number, since it uses less digits than its factorization.

2178422208452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682786011 (or 2682786009 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 47.

The spelling of 2178422208452 in words is "two trillion, one hundred seventy-eight billion, four hundred twenty-two million, two hundred eight thousand, four hundred fifty-two".