86181698507 has 2 divisors, whose sum is σ = 86181698508. Its totient is φ = 86181698506.

The previous prime is 86181698437. The next prime is 86181698513. The reversal of 86181698507 is 70589618168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86181698507 - 2³² = 81886731211 is a prime.

It is not a weakly prime, because it can be changed into another prime (86181698597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43090849253 + 43090849254.

It is an arithmetic number, because the mean of its divisors is an integer number (43090849254).

Almost surely, 2^86181698507 is an apocalyptic number.

86181698507 is a deficient number, since it is larger than the sum of its proper divisors (1).

86181698507 is an equidigital number, since it uses as much as digits as its factorization.

86181698507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 86181698507 in words is "eighty-six billion, one hundred eighty-one million, six hundred ninety-eight thousand, five hundred seven".