91001449232471 has 2 divisors, whose sum is σ = 91001449232472. Its totient is φ = 91001449232470.

The previous prime is 91001449232467. The next prime is 91001449232501. The reversal of 91001449232471 is 17423294410019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91001449232471 - 2² = 91001449232467 is a prime.

It is a super-3 number, since 3×91001449232471³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91001449232371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45500724616235 + 45500724616236.

It is an arithmetic number, because the mean of its divisors is an integer number (45500724616236).

Almost surely, 2^{91001449232471} is an apocalyptic number.

91001449232471 is a deficient number, since it is larger than the sum of its proper divisors (1).

91001449232471 is an equidigital number, since it uses as much as digits as its factorization.

91001449232471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 91001449232471 in words is "ninety-one trillion, one billion, four hundred forty-nine million, two hundred thirty-two thousand, four hundred seventy-one".