91816272151 has 2 divisors, whose sum is σ = 91816272152. Its totient is φ = 91816272150.

The previous prime is 91816272139. The next prime is 91816272203. The reversal of 91816272151 is 15127261819.

It is a weak prime.

It is an emirp because it is prime and its reverse (15127261819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91816272151 - 2²³ = 91807883543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91816272098 and 91816272107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91816275151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45908136075 + 45908136076.

It is an arithmetic number, because the mean of its divisors is an integer number (45908136076).

Almost surely, 2^91816272151 is an apocalyptic number.

91816272151 is a deficient number, since it is larger than the sum of its proper divisors (1).

91816272151 is an equidigital number, since it uses as much as digits as its factorization.

91816272151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 43.

The spelling of 91816272151 in words is "ninety-one billion, eight hundred sixteen million, two hundred seventy-two thousand, one hundred fifty-one".