499999813499999 has 16 divisors (see below), whose sum is σ = 523798983046080. Its totient is φ = 476821648093440.

The previous prime is 499999813499951. The next prime is 499999813500053. The reversal of 499999813499999 is 999994318999994.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499999813499999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 499999813499999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999813499939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427104227 + ... + 428273300.

It is an arithmetic number, because the mean of its divisors is an integer number (32737436440380).

Almost surely, 2^{499999813499999} is an apocalyptic number.

499999813499999 is a deficient number, since it is larger than the sum of its proper divisors (23799169546081).

499999813499999 is a wasteful number, since it uses less digits than its factorization.

499999813499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855377890.

The product of its digits is 1338925209984, while the sum is 110.

The spelling of 499999813499999 in words is "four hundred ninety-nine trillion, nine hundred ninety-nine billion, eight hundred thirteen million, four hundred ninety-nine thousand, nine hundred ninety-nine".