91000384885 has 8 divisors (see below), whose sum is σ = 109202313600. Its totient is φ = 72799073424.

The previous prime is 91000384877. The next prime is 91000384901. The reversal of 91000384885 is 58848300019.

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 91000384885 - 2³ = 91000384877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282384 + ... + 511606.

It is an arithmetic number, because the mean of its divisors is an integer number (13650289200).

Almost surely, 2^91000384885 is an apocalyptic number.

It is an amenable number.

91000384885 is a deficient number, since it is larger than the sum of its proper divisors (18201928715).

91000384885 is a wasteful number, since it uses less digits than its factorization.

91000384885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308627.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 91000384885 in words is "ninety-one billion, three hundred eighty-four thousand, eight hundred eighty-five".