499131131994 has 128 divisors (see below), whose sum is σ = 1217279232000. Its totient is φ = 150346627200.

The previous prime is 499131131977. The next prime is 499131132043.

499131131994 is a `hidden beast` number, since 4 + 9 + 9 + 1 + 311 + 319 + 9 + 4 = 666.

499131131994 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×499131131994² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 499131131994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 70010622 + ... + 70017750.

It is an arithmetic number, because the mean of its divisors is an integer number (9509994000).

Almost surely, 2^499131131994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499131131994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608639616000).

499131131994 is an abundant number, since it is smaller than the sum of its proper divisors (718148100006).

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

499131131994 is a wasteful number, since it uses less digits than its factorization.

499131131994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7841 (or 7835 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The spelling of 499131131994 in words is "four hundred ninety-nine billion, one hundred thirty-one million, one hundred thirty-one thousand, nine hundred ninety-four".