91030734401 has 2 divisors, whose sum is σ = 91030734402. Its totient is φ = 91030734400.

The previous prime is 91030734337. The next prime is 91030734413. The reversal of 91030734401 is 10443703019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89329254400 + 1701480001 = 298880^2 + 41249^2 .

It is an emirp because it is prime and its reverse (10443703019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91030734401 - 2⁶ = 91030734337 is a prime.

It is not a weakly prime, because it can be changed into another prime (91030734451) 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 as a sum of consecutive naturals, namely, 45515367200 + 45515367201.

It is an arithmetic number, because the mean of its divisors is an integer number (45515367201).

Almost surely, 2^91030734401 is an apocalyptic number.

It is an amenable number.

91030734401 is a deficient number, since it is larger than the sum of its proper divisors (1).

91030734401 is an equidigital number, since it uses as much as digits as its factorization.

91030734401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

Subtracting from 91030734401 its sum of digits (32), we obtain a square (91030734369 = 301713²).

The spelling of 91030734401 in words is "ninety-one billion, thirty million, seven hundred thirty-four thousand, four hundred one".