91610097001 has 2 divisors, whose sum is σ = 91610097002. Its totient is φ = 91610097000.

The previous prime is 91610096993. The next prime is 91610097023. The reversal of 91610097001 is 10079001619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77326261776 + 14283835225 = 278076^2 + 119515^2 .

It is an emirp because it is prime and its reverse (10079001619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91610097001 - 2³ = 91610096993 is a prime.

It is not a weakly prime, because it can be changed into another prime (91610097091) 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, 45805048500 + 45805048501.

It is an arithmetic number, because the mean of its divisors is an integer number (45805048501).

Almost surely, 2^91610097001 is an apocalyptic number.

It is an amenable number.

91610097001 is a deficient number, since it is larger than the sum of its proper divisors (1).

91610097001 is an equidigital number, since it uses as much as digits as its factorization.

91610097001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 34.

It can be divided in two parts, 916100 and 97001, that added together give a palindrome (1013101).

The spelling of 91610097001 in words is "ninety-one billion, six hundred ten million, ninety-seven thousand, one".