991865704283 has 8 divisors (see below), whose sum is σ = 992673426240. Its totient is φ = 991058175360.

The previous prime is 991865704273. The next prime is 991865704331. The reversal of 991865704283 is 382407568199.

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 991865704283 - 2¹² = 991865700187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (991865704253) 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, 11303966 + ... + 11391372.

It is an arithmetic number, because the mean of its divisors is an integer number (124084178280).

It is a 1-persistent number, because it is pandigital, but 2⋅991865704283 = 1983731408566 is not.

Almost surely, 2^991865704283 is an apocalyptic number.

991865704283 is a deficient number, since it is larger than the sum of its proper divisors (807721957).

991865704283 is a wasteful number, since it uses less digits than its factorization.

991865704283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96517.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 991865704283 in words is "nine hundred ninety-one billion, eight hundred sixty-five million, seven hundred four thousand, two hundred eighty-three".