91803440284 has 12 divisors (see below), whose sum is σ = 160729765000. Its totient is φ = 45880650288.

The previous prime is 91803440237. The next prime is 91803440327. The reversal of 91803440284 is 48204430819.

It is a self number, because there is not a number n which added to its sum of digits gives 91803440284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5257659 + ... + 5275090.

Almost surely, 2^91803440284 is an apocalyptic number.

It is an amenable number.

91803440284 is a deficient number, since it is larger than the sum of its proper divisors (68926324716).

91803440284 is a wasteful number, since it uses less digits than its factorization.

91803440284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534932 (or 10534930 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 91803440284 in words is "ninety-one billion, eight hundred three million, four hundred forty thousand, two hundred eighty-four".