999930917517 has 8 divisors (see below), whose sum is σ = 1523704255296. Its totient is φ = 571389095712.

The previous prime is 999930917501. The next prime is 999930917539. The reversal of 999930917517 is 715719039999.

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

It is not a de Polignac number, because 999930917517 - 2⁴ = 999930917501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999930917567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23807878968 + ... + 23807879009.

It is an arithmetic number, because the mean of its divisors is an integer number (190463031912).

Almost surely, 2^999930917517 is an apocalyptic number.

It is an amenable number.

999930917517 is a deficient number, since it is larger than the sum of its proper divisors (523773337779).

999930917517 is a wasteful number, since it uses less digits than its factorization.

999930917517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47615757987.

The product of its (nonzero) digits is 43401015, while the sum is 69.

The spelling of 999930917517 in words is "nine hundred ninety-nine billion, nine hundred thirty million, nine hundred seventeen thousand, five hundred seventeen".