91397000803 has 2 divisors, whose sum is σ = 91397000804. Its totient is φ = 91397000802.

The previous prime is 91397000791. The next prime is 91397000809. The reversal of 91397000803 is 30800079319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91397000803 - 2²⁵ = 91363446371 is a prime.

It is not a weakly prime, because it can be changed into another prime (91397000809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45698500401 + 45698500402.

It is an arithmetic number, because the mean of its divisors is an integer number (45698500402).

Almost surely, 2^91397000803 is an apocalyptic number.

91397000803 is a deficient number, since it is larger than the sum of its proper divisors (1).

91397000803 is an equidigital number, since it uses as much as digits as its factorization.

91397000803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 91397000803 in words is "ninety-one billion, three hundred ninety-seven million, eight hundred three", and thus it is an aban number.