2556611142242 has 8 divisors (see below), whose sum is σ = 3858443810256. Its totient is φ = 1270463205492.

The previous prime is 2556611142221. The next prime is 2556611142259. The reversal of 2556611142242 is 2422411166552.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2556611142242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3921182408 + ... + 3921183059.

It is an arithmetic number, because the mean of its divisors is an integer number (482305476282).

Almost surely, 2^{2556611142242} is an apocalyptic number.

2556611142242 is a deficient number, since it is larger than the sum of its proper divisors (1301832668014).

2556611142242 is a wasteful number, since it uses less digits than its factorization.

2556611142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842365632.

The product of its digits is 230400, while the sum is 41.

The spelling of 2556611142242 in words is "two trillion, five hundred fifty-six billion, six hundred eleven million, one hundred forty-two thousand, two hundred forty-two".