499901575128 has 32 divisors (see below), whose sum is σ = 1249772967360. Its totient is φ = 166631321120.

The previous prime is 499901575109. The next prime is 499901575133. The reversal of 499901575128 is 821575109994.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2116663 + ... + 2340953.

It is an arithmetic number, because the mean of its divisors is an integer number (39055405230).

Almost surely, 2^499901575128 is an apocalyptic number.

It is an amenable number.

499901575128 is an abundant number, since it is smaller than the sum of its proper divisors (749871392232).

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

499901575128 is a wasteful number, since it uses less digits than its factorization.

499901575128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317167 (or 317163 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 60.

The spelling of 499901575128 in words is "four hundred ninety-nine billion, nine hundred one million, five hundred seventy-five thousand, one hundred twenty-eight".