2578108090066 has 8 divisors (see below), whose sum is σ = 3867573694860. Its totient is φ = 1288916858448.

The previous prime is 2578108090021. The next prime is 2578108090079. The reversal of 2578108090066 is 6600908018752.

It can be written as a sum of positive squares in 2 ways, for example, as 2095340205841 + 482767884225 = 1447529^2 + 694815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2578108089995 and 2578108090022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68569801 + ... + 68607388.

Almost surely, 2^{2578108090066} is an apocalyptic number.

2578108090066 is a deficient number, since it is larger than the sum of its proper divisors (1289465604794).

2578108090066 is a wasteful number, since it uses less digits than its factorization.

2578108090066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137186588.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 2578108090066 in words is "two trillion, five hundred seventy-eight billion, one hundred eight million, ninety thousand, sixty-six".