91000280273 has 6 divisors (see below), whose sum is σ = 105857468946. Its totient is φ = 78000240192.

The previous prime is 91000280249. The next prime is 91000280281. The reversal of 91000280273 is 37208200019.

It can be written as a sum of positive squares in only one way, i.e., 89995200064 + 1005080209 = 299992^2 + 31703^2 .

It is not a de Polignac number, because 91000280273 - 2¹⁴ = 91000263889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91000280773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 928574240 + ... + 928574337.

It is an arithmetic number, because the mean of its divisors is an integer number (17642911491).

Almost surely, 2^91000280273 is an apocalyptic number.

It is an amenable number.

91000280273 is a deficient number, since it is larger than the sum of its proper divisors (14857188673).

91000280273 is a wasteful number, since it uses less digits than its factorization.

91000280273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857148591 (or 1857148584 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 91000280273 in words is "ninety-one billion, two hundred eighty thousand, two hundred seventy-three".