1138530556799 has 4 divisors (see below), whose sum is σ = 1139913948336. Its totient is φ = 1137147165264.

The previous prime is 1138530556783. The next prime is 1138530556859. The reversal of 1138530556799 is 9976550358311.

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

It is a cyclic number.

It is not a de Polignac number, because 1138530556799 - 2⁴ = 1138530556783 is a prime.

It is a super-4 number, since 4×1138530556799⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138530552799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691694534 + ... + 691696179.

It is an arithmetic number, because the mean of its divisors is an integer number (284978487084).

Almost surely, 2^{1138530556799} is an apocalyptic number.

1138530556799 is a deficient number, since it is larger than the sum of its proper divisors (1383391537).

1138530556799 is an equidigital number, since it uses as much as digits as its factorization.

1138530556799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383391536.

The product of its (nonzero) digits is 30618000, while the sum is 62.

The spelling of 1138530556799 in words is "one trillion, one hundred thirty-eight billion, five hundred thirty million, five hundred fifty-six thousand, seven hundred ninety-nine".