5781128386522 has 4 divisors (see below), whose sum is σ = 8671692579786. Its totient is φ = 2890564193260.

The previous prime is 5781128386511. The next prime is 5781128386541. The reversal of 5781128386522 is 2256838211875.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3859303469121 + 1921824917401 = 1964511^2 + 1386299^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 1445282096629 + ... + 1445282096632.

Almost surely, 2^{5781128386522} is an apocalyptic number.

5781128386522 is a deficient number, since it is larger than the sum of its proper divisors (2890564193264).

5781128386522 is a wasteful number, since it uses less digits than its factorization.

5781128386522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890564193263.

The product of its digits is 12902400, while the sum is 58.

The spelling of 5781128386522 in words is "five trillion, seven hundred eighty-one billion, one hundred twenty-eight million, three hundred eighty-six thousand, five hundred twenty-two".