91168742267 has 2 divisors, whose sum is σ = 91168742268. Its totient is φ = 91168742266.

The previous prime is 91168742237. The next prime is 91168742309. The reversal of 91168742267 is 76224786119.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91168742267 - 2²² = 91164547963 is a prime.

It is not a weakly prime, because it can be changed into another prime (91168742237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45584371133 + 45584371134.

It is an arithmetic number, because the mean of its divisors is an integer number (45584371134).

Almost surely, 2^91168742267 is an apocalyptic number.

91168742267 is a deficient number, since it is larger than the sum of its proper divisors (1).

91168742267 is an equidigital number, since it uses as much as digits as its factorization.

91168742267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The spelling of 91168742267 in words is "ninety-one billion, one hundred sixty-eight million, seven hundred forty-two thousand, two hundred sixty-seven".