78786043322811 has 16 divisors (see below), whose sum is σ = 114799283475840. Its totient is φ = 47665199549120.

The previous prime is 78786043322803. The next prime is 78786043322827. The reversal of 78786043322811 is 11822334068787.

It is a cyclic number.

It is not a de Polignac number, because 78786043322811 - 2³ = 78786043322803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78786043322891) 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, 2097921345 + ... + 2097958898.

It is an arithmetic number, because the mean of its divisors is an integer number (7174955217240).

Almost surely, 2^{78786043322811} is an apocalyptic number.

78786043322811 is a deficient number, since it is larger than the sum of its proper divisors (36013240153029).

78786043322811 is a wasteful number, since it uses less digits than its factorization.

78786043322811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195880826.

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 78786043322811 in words is "seventy-eight trillion, seven hundred eighty-six billion, forty-three million, three hundred twenty-two thousand, eight hundred eleven".