91144192301 has 2 divisors, whose sum is σ = 91144192302. Its totient is φ = 91144192300.

The previous prime is 91144192291. The next prime is 91144192331. The reversal of 91144192301 is 10329144119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86230322500 + 4913869801 = 293650^2 + 70099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91144192301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91144192331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45572096150 + 45572096151.

It is an arithmetic number, because the mean of its divisors is an integer number (45572096151).

Almost surely, 2^91144192301 is an apocalyptic number.

It is an amenable number.

91144192301 is a deficient number, since it is larger than the sum of its proper divisors (1).

91144192301 is an equidigital number, since it uses as much as digits as its factorization.

91144192301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 91144192301 in words is "ninety-one billion, one hundred forty-four million, one hundred ninety-two thousand, three hundred one".