91430340401 has 6 divisors (see below), whose sum is σ = 96495733602. Its totient is φ = 86618216880.

The previous prime is 91430340317. The next prime is 91430340427. The reversal of 91430340401 is 10404303419.

It can be written as a sum of positive squares in only one way, i.e., 65102032801 + 26328307600 = 255151^2 + 162260^2 .

It is a de Polignac number, because none of the positive numbers 2^k-91430340401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91430345401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126634460 + ... + 126635181.

It is an arithmetic number, because the mean of its divisors is an integer number (16082622267).

Almost surely, 2^91430340401 is an apocalyptic number.

It is an amenable number.

91430340401 is a deficient number, since it is larger than the sum of its proper divisors (5065393201).

91430340401 is a wasteful number, since it uses less digits than its factorization.

91430340401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253269679 (or 253269660 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 91430340401 in words is "ninety-one billion, four hundred thirty million, three hundred forty thousand, four hundred one".