11778450616729 has 16 divisors (see below), whose sum is σ = 12199388477760. Its totient is φ = 11364441580800.

The previous prime is 11778450616717. The next prime is 11778450616763. The reversal of 11778450616729 is 92761605487711.

It is a cyclic number.

It is not a de Polignac number, because 11778450616729 - 2¹³ = 11778450608537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11778450416729) 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 15 ways as a sum of consecutive naturals, for example, 2557989 + ... + 5486365.

It is an arithmetic number, because the mean of its divisors is an integer number (762461779860).

Almost surely, 2^{11778450616729} is an apocalyptic number.

It is an amenable number.

11778450616729 is a deficient number, since it is larger than the sum of its proper divisors (420937861031).

11778450616729 is a wasteful number, since it uses less digits than its factorization.

11778450616729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929560.

The product of its (nonzero) digits is 35562240, while the sum is 64.

The spelling of 11778450616729 in words is "eleven trillion, seven hundred seventy-eight billion, four hundred fifty million, six hundred sixteen thousand, seven hundred twenty-nine".