991363532703 has 8 divisors (see below), whose sum is σ = 1391387414400. Its totient is φ = 626124336408.

The previous prime is 991363532699. The next prime is 991363532713. The reversal of 991363532703 is 307235363199.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 991363532703 - 2² = 991363532699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991363532713) 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, 8696171283 + ... + 8696171396.

It is an arithmetic number, because the mean of its divisors is an integer number (173923426800).

Almost surely, 2^991363532703 is an apocalyptic number.

991363532703 is a deficient number, since it is larger than the sum of its proper divisors (400023881697).

991363532703 is a wasteful number, since it uses less digits than its factorization.

991363532703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17392342701.

The product of its (nonzero) digits is 2755620, while the sum is 51.

The spelling of 991363532703 in words is "nine hundred ninety-one billion, three hundred sixty-three million, five hundred thirty-two thousand, seven hundred three".