2006558135444 has 6 divisors (see below), whose sum is σ = 3511476737034. Its totient is φ = 1003279067720.

The previous prime is 2006558135437. The next prime is 2006558135479. The reversal of 2006558135444 is 4445318556002.

It can be written as a sum of positive squares in only one way, i.e., 1133398710544 + 873159424900 = 1064612^2 + 934430^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 250819766927 + ... + 250819766934.

It is an arithmetic number, because the mean of its divisors is an integer number (585246122839).

Almost surely, 2^{2006558135444} is an apocalyptic number.

It is an amenable number.

2006558135444 is a deficient number, since it is larger than the sum of its proper divisors (1504918601590).

2006558135444 is a wasteful number, since it uses less digits than its factorization.

2006558135444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501639533865 (or 501639533863 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 2006558135444 in words is "two trillion, six billion, five hundred fifty-eight million, one hundred thirty-five thousand, four hundred forty-four".