91370320548 has 48 divisors (see below), whose sum is σ = 231059680320. Its totient is φ = 27934867584.

The previous prime is 91370320543. The next prime is 91370320567. The reversal of 91370320548 is 84502307319.

It is not an unprimeable number, because it can be changed into a prime (91370320543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840818 + ... + 1889801.

It is an arithmetic number, because the mean of its divisors is an integer number (4813743340).

Almost surely, 2^91370320548 is an apocalyptic number.

It is an amenable number.

91370320548 is an abundant number, since it is smaller than the sum of its proper divisors (139689359772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91370320548 is a wasteful number, since it uses less digits than its factorization.

91370320548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730796 (or 3730794 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 91370320548 in words is "ninety-one billion, three hundred seventy million, three hundred twenty thousand, five hundred forty-eight".