91005000448 has 18 divisors (see below), whose sum is σ = 181654513124. Its totient is φ = 45502500096.

The previous prime is 91005000439. The next prime is 91005000469. The reversal of 91005000448 is 84400050019.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177743886 + ... + 177744397.

Almost surely, 2^91005000448 is an apocalyptic number.

It is an amenable number.

91005000448 is a deficient number, since it is larger than the sum of its proper divisors (90649512676).

91005000448 is an equidigital number, since it uses as much as digits as its factorization.

91005000448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355488299 (or 355488285 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 91005000448 in words is "ninety-one billion, five million, four hundred forty-eight", and thus it is an aban number.