916499875599 has 160 divisors (see below), whose sum is σ = 1747065729024. Its totient is φ = 464988625920.

The previous prime is 916499875589. The next prime is 916499875649. The reversal of 916499875599 is 995578994619.

916499875599 is a `hidden beast` number, since 9 + 1 + 6 + 499 + 8 + 75 + 59 + 9 = 666.

It is a Cunningham number, because it is equal to 957340²-1.

It is not a de Polignac number, because 916499875599 - 2¹³ = 916499867407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916499875589) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 73708887 + ... + 73721319.

Almost surely, 2^916499875599 is an apocalyptic number.

916499875599 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

916499875599 is a deficient number, since it is larger than the sum of its proper divisors (830565853425).

916499875599 is a wasteful number, since it uses less digits than its factorization.

916499875599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12739 (or 12730 counting only the distinct ones).

The product of its digits is 1984046400, while the sum is 81.

The spelling of 916499875599 in words is "nine hundred sixteen billion, four hundred ninety-nine million, eight hundred seventy-five thousand, five hundred ninety-nine".