91067851098187 has 2 divisors, whose sum is σ = 91067851098188. Its totient is φ = 91067851098186.

The previous prime is 91067851098149. The next prime is 91067851098209. The reversal of 91067851098187 is 78189015876019.

It is a strong prime.

It is an emirp because it is prime and its reverse (78189015876019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91067851098187 - 2²³ = 91067842709579 is a prime.

It is not a weakly prime, because it can be changed into another prime (91067851093187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45533925549093 + 45533925549094.

It is an arithmetic number, because the mean of its divisors is an integer number (45533925549094).

Almost surely, 2^{91067851098187} is an apocalyptic number.

91067851098187 is a deficient number, since it is larger than the sum of its proper divisors (1).

91067851098187 is an equidigital number, since it uses as much as digits as its factorization.

91067851098187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 70.

The spelling of 91067851098187 in words is "ninety-one trillion, sixty-seven billion, eight hundred fifty-one million, ninety-eight thousand, one hundred eighty-seven".