91869244271 has 16 divisors (see below), whose sum is σ = 106343263488. Its totient is φ = 77738918400.

The previous prime is 91869244249. The next prime is 91869244273. The reversal of 91869244271 is 17244296819.

It is a cyclic number.

It is not a de Polignac number, because 91869244271 - 2¹⁴ = 91869227887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91869244273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82565 + ... + 436526.

It is an arithmetic number, because the mean of its divisors is an integer number (6646453968).

Almost surely, 2^91869244271 is an apocalyptic number.

91869244271 is a deficient number, since it is larger than the sum of its proper divisors (14474019217).

91869244271 is a wasteful number, since it uses less digits than its factorization.

91869244271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519422.

The product of its digits is 1741824, while the sum is 53.

The spelling of 91869244271 in words is "ninety-one billion, eight hundred sixty-nine million, two hundred forty-four thousand, two hundred seventy-one".