91210220273 has 8 divisors (see below), whose sum is σ = 95188773888. Its totient is φ = 87232741024.

The previous prime is 91210220267. The next prime is 91210220281. The reversal of 91210220273 is 37202201219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91210220273 - 2¹² = 91210216177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91210220243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92636 + ... + 437037.

It is an arithmetic number, because the mean of its divisors is an integer number (11898596736).

Almost surely, 2^91210220273 is an apocalyptic number.

It is an amenable number.

91210220273 is a deficient number, since it is larger than the sum of its proper divisors (3978553615).

91210220273 is a wasteful number, since it uses less digits than its factorization.

91210220273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537183.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 91210220273 in words is "ninety-one billion, two hundred ten million, two hundred twenty thousand, two hundred seventy-three".