86513454941779 has 2 divisors, whose sum is σ = 86513454941780. Its totient is φ = 86513454941778.

The previous prime is 86513454941731. The next prime is 86513454941783. The reversal of 86513454941779 is 97714945431568.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86513454941779 - 2²¹ = 86513452844627 is a prime.

It is not a weakly prime, because it can be changed into another prime (86513454941729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43256727470889 + 43256727470890.

It is an arithmetic number, because the mean of its divisors is an integer number (43256727470890).

Almost surely, 2^{86513454941779} is an apocalyptic number.

86513454941779 is a deficient number, since it is larger than the sum of its proper divisors (1).

86513454941779 is an equidigital number, since it uses as much as digits as its factorization.

86513454941779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 914457600, while the sum is 73.

The spelling of 86513454941779 in words is "eighty-six trillion, five hundred thirteen billion, four hundred fifty-four million, nine hundred forty-one thousand, seven hundred seventy-nine".