86767476779 has 2 divisors, whose sum is σ = 86767476780. Its totient is φ = 86767476778.

The previous prime is 86767476767. The next prime is 86767476797. The reversal of 86767476779 is 97767476768.

Together with next prime (86767476797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86767476779 is a prime.

It is not a weakly prime, because it can be changed into another prime (86767476739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43383738389 + 43383738390.

It is an arithmetic number, because the mean of its divisors is an integer number (43383738390).

Almost surely, 2^86767476779 is an apocalyptic number.

86767476779 is a deficient number, since it is larger than the sum of its proper divisors (1).

86767476779 is an equidigital number, since it uses as much as digits as its factorization.

86767476779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1045529856, while the sum is 74.

The spelling of 86767476779 in words is "eighty-six billion, seven hundred sixty-seven million, four hundred seventy-six thousand, seven hundred seventy-nine".