11878418510785 has 16 divisors (see below), whose sum is σ = 14342201692416. Its totient is φ = 9444007116288.

The previous prime is 11878418510771. The next prime is 11878418510789. The reversal of 11878418510785 is 58701581487811.

It is a cyclic number.

It is not a de Polignac number, because 11878418510785 - 2²⁹ = 11877881639873 is a prime.

It is a super-2 number, since 2×11878418510785² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11878418510789) 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, 18276472 + ... + 18915238.

It is an arithmetic number, because the mean of its divisors is an integer number (896387605776).

Almost surely, 2^{11878418510785} is an apocalyptic number.

It is an amenable number.

11878418510785 is a deficient number, since it is larger than the sum of its proper divisors (2463783181631).

11878418510785 is a wasteful number, since it uses less digits than its factorization.

11878418510785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661752.

The product of its (nonzero) digits is 20070400, while the sum is 64.

The spelling of 11878418510785 in words is "eleven trillion, eight hundred seventy-eight billion, four hundred eighteen million, five hundred ten thousand, seven hundred eighty-five".