499999813500000 has 672 divisors, whose sum is σ = 1790981237646720. Its totient is φ = 121128640000000.

The previous prime is 499999813499951. The next prime is 499999813500053. The reversal of 499999813500000 is 5318999994.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 499999813499895 and 499999813499904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 25921490356 + ... + 25921509644.

It is an arithmetic number, because the mean of its divisors is an integer number (2665150651260).

Almost surely, 2^{499999813500000} is an apocalyptic number.

499999813500000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499999813500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895490618823360).

499999813500000 is an abundant number, since it is smaller than the sum of its proper divisors (1290981424146720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499999813500000 is a wasteful number, since it uses less digits than its factorization.

499999813500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20914 (or 20881 counting only the distinct ones).

The product of its (nonzero) digits is 28343520, while the sum is 66.

The spelling of 499999813500000 in words is "four hundred ninety-nine trillion, nine hundred ninety-nine billion, eight hundred thirteen million, five hundred thousand".