11778130442 has 16 divisors (see below), whose sum is σ = 19033547400. Its totient is φ = 5433964032.

The previous prime is 11778130367. The next prime is 11778130477. The reversal of 11778130442 is 24403187711.

It can be written as a sum of positive squares in 4 ways, for example, as 8306681881 + 3471448561 = 91141^2 + 58919^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11778130396 and 11778130405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17567 + ... + 154482.

Almost surely, 2^11778130442 is an apocalyptic number.

11778130442 is a deficient number, since it is larger than the sum of its proper divisors (7255416958).

11778130442 is a wasteful number, since it uses less digits than its factorization.

11778130442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174697.

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 11778130442 in words is "eleven billion, seven hundred seventy-eight million, one hundred thirty thousand, four hundred forty-two".