91294018259 has 2 divisors, whose sum is σ = 91294018260. Its totient is φ = 91294018258.

The previous prime is 91294018187. The next prime is 91294018267. The reversal of 91294018259 is 95281049219.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91294018259 - 2¹⁶ = 91293952723 is a prime.

It is not a weakly prime, because it can be changed into another prime (91294008259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45647009129 + 45647009130.

It is an arithmetic number, because the mean of its divisors is an integer number (45647009130).

Almost surely, 2^91294018259 is an apocalyptic number.

91294018259 is a deficient number, since it is larger than the sum of its proper divisors (1).

91294018259 is an equidigital number, since it uses as much as digits as its factorization.

91294018259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 91294018259 in words is "ninety-one billion, two hundred ninety-four million, eighteen thousand, two hundred fifty-nine".