916308921065 has 8 divisors (see below), whose sum is σ = 1109301420168. Its totient is φ = 726559993600.

The previous prime is 916308921041. The next prime is 916308921079. The reversal of 916308921065 is 560129803619.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7024618969 + 909284302096 = 83813^2 + 953564^2 .

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

It is not a de Polignac number, because 916308921065 - 2¹⁰ = 916308920041 is a prime.

It is a Duffinian 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, 810892286 + ... + 810893415.

It is an arithmetic number, because the mean of its divisors is an integer number (138662677521).

Almost surely, 2^916308921065 is an apocalyptic number.

It is an amenable number.

916308921065 is a deficient number, since it is larger than the sum of its proper divisors (192992499103).

916308921065 is a wasteful number, since it uses less digits than its factorization.

916308921065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621785819.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 916308921065 in words is "nine hundred sixteen billion, three hundred eight million, nine hundred twenty-one thousand, sixty-five".