499899794212 has 144 divisors (see below), whose sum is σ = 1116523699200. Its totient is φ = 191664869760.

The previous prime is 499899794209. The next prime is 499899794239. The reversal of 499899794212 is 212497998994.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19809739 + ... + 19834957.

It is an arithmetic number, because the mean of its divisors is an integer number (7753636800).

Almost surely, 2^499899794212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499899794212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558261849600).

499899794212 is an abundant number, since it is smaller than the sum of its proper divisors (616623904988).

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

499899794212 is a wasteful number, since it uses less digits than its factorization.

499899794212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25386 (or 25371 counting only the distinct ones).

The product of its digits is 211631616, while the sum is 73.

The spelling of 499899794212 in words is "four hundred ninety-nine billion, eight hundred ninety-nine million, seven hundred ninety-four thousand, two hundred twelve".