11787070549 has 2 divisors, whose sum is σ = 11787070550. Its totient is φ = 11787070548.

The previous prime is 11787070531. The next prime is 11787070571. The reversal of 11787070549 is 94507078711.

11787070549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11579912100 + 207158449 = 107610^2 + 14393^2 .

It is a cyclic number.

It is not a de Polignac number, because 11787070549 - 2²⁷ = 11652852821 is a prime.

It is a super-2 number, since 2×11787070549² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11787070849) by changing a digit.

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, 5893535274 + 5893535275.

It is an arithmetic number, because the mean of its divisors is an integer number (5893535275).

Almost surely, 2^11787070549 is an apocalyptic number.

It is an amenable number.

11787070549 is a deficient number, since it is larger than the sum of its proper divisors (1).

11787070549 is an equidigital number, since it uses as much as digits as its factorization.

11787070549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 49.

The spelling of 11787070549 in words is "eleven billion, seven hundred eighty-seven million, seventy thousand, five hundred forty-nine".