499818083280 has 320 divisors, whose sum is σ = 1636239916800. Its totient is φ = 126036951040.

The previous prime is 499818083273. The next prime is 499818083321. The reversal of 499818083280 is 82380818994.

499818083280 = T₁₀₅₉₃₆ + T₁₀₅₉₃₇ + ... + T₁₀₆₀₂₄.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66276310 + ... + 66283850.

It is an arithmetic number, because the mean of its divisors is an integer number (5113249740).

Almost surely, 2^499818083280 is an apocalyptic number.

499818083280 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 499818083280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818119958400).

499818083280 is an abundant number, since it is smaller than the sum of its proper divisors (1136421833520).

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

499818083280 is a wasteful number, since it uses less digits than its factorization.

499818083280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782 (or 7776 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 60.

The spelling of 499818083280 in words is "four hundred ninety-nine billion, eight hundred eighteen million, eighty-three thousand, two hundred eighty".