78911543583941 has 16 divisors (see below), whose sum is σ = 80265476636400. Its totient is φ = 77570590076928.

The previous prime is 78911543583923. The next prime is 78911543583959. The reversal of 78911543583941 is 14938534511987.

It is an interprime number because it is at equal distance from previous prime (78911543583923) and next prime (78911543583959).

It can be written as a sum of positive squares in 8 ways, for example, as 3242596119841 + 75668947464100 = 1800721^2 + 8698790^2 .

It is a cyclic number.

It is not a de Polignac number, because 78911543583941 - 2⁶ = 78911543583877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78911543583991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7644005 + ... + 14705573.

It is an arithmetic number, because the mean of its divisors is an integer number (5016592289775).

Almost surely, 2^{78911543583941} is an apocalyptic number.

It is an amenable number.

78911543583941 is a deficient number, since it is larger than the sum of its proper divisors (1353933052459).

78911543583941 is a wasteful number, since it uses less digits than its factorization.

78911543583941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7062488.

The product of its digits is 130636800, while the sum is 68.

The spelling of 78911543583941 in words is "seventy-eight trillion, nine hundred eleven billion, five hundred forty-three million, five hundred eighty-three thousand, nine hundred forty-one".