86178834381751 has 2 divisors, whose sum is σ = 86178834381752. Its totient is φ = 86178834381750.

The previous prime is 86178834381749. The next prime is 86178834381769. The reversal of 86178834381751 is 15718343887168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86178834381751 - 2¹ = 86178834381749 is a prime.

Together with 86178834381749, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86178834381721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43089417190875 + 43089417190876.

It is an arithmetic number, because the mean of its divisors is an integer number (43089417190876).

Almost surely, 2^{86178834381751} is an apocalyptic number.

86178834381751 is a deficient number, since it is larger than the sum of its proper divisors (1).

86178834381751 is an equidigital number, since it uses as much as digits as its factorization.

86178834381751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216760320, while the sum is 70.

The spelling of 86178834381751 in words is "eighty-six trillion, one hundred seventy-eight billion, eight hundred thirty-four million, three hundred eighty-one thousand, seven hundred fifty-one".