1239135782824 has 8 divisors (see below), whose sum is σ = 2323379592810. Its totient is φ = 619567891408.

The previous prime is 1239135782743. The next prime is 1239135782861. The reversal of 1239135782824 is 4282875319321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 882881985924 + 356253796900 = 939618^2 + 596870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 77445986419 + ... + 77445986434.

Almost surely, 2^{1239135782824} is an apocalyptic number.

It is an amenable number.

1239135782824 is a deficient number, since it is larger than the sum of its proper divisors (1084243809986).

1239135782824 is a wasteful number, since it uses less digits than its factorization.

1239135782824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154891972859 (or 154891972855 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 1239135782824 in words is "one trillion, two hundred thirty-nine billion, one hundred thirty-five million, seven hundred eighty-two thousand, eight hundred twenty-four".