499500000321 has 16 divisors (see below), whose sum is σ = 761153094528. Its totient is φ = 285424732800.

The previous prime is 499500000301. The next prime is 499500000323. The reversal of 499500000321 is 123000005994.

It is not a de Polignac number, because 499500000321 - 2⁷ = 499500000193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (499500000323) 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, 2367181 + ... + 2569541.

It is an arithmetic number, because the mean of its divisors is an integer number (47572068408).

Almost surely, 2^499500000321 is an apocalyptic number.

It is an amenable number.

499500000321 is a deficient number, since it is larger than the sum of its proper divisors (261653094207).

499500000321 is a wasteful number, since it uses less digits than its factorization.

499500000321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319912.

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 499500000321 in words is "four hundred ninety-nine billion, five hundred million, three hundred twenty-one", and thus it is an aban number.