499617891288 has 128 divisors (see below), whose sum is σ = 1399431168000. Its totient is φ = 165148139520.

The previous prime is 499617891271. The next prime is 499617891337. The reversal of 499617891288 is 882198716994.

499617891288 is a `hidden beast` number, since 4 + 9 + 96 + 178 + 91 + 288 = 666.

It is a super-3 number, since 3×499617891288³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 91318393 + ... + 91323863.

It is an arithmetic number, because the mean of its divisors is an integer number (10933056000).

Almost surely, 2^499617891288 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 499617891288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699715584000).

499617891288 is an abundant number, since it is smaller than the sum of its proper divisors (899813276712).

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

499617891288 is a wasteful number, since it uses less digits than its factorization.

499617891288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8942 (or 8932 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 72.

The spelling of 499617891288 in words is "four hundred ninety-nine billion, six hundred seventeen million, eight hundred ninety-one thousand, two hundred eighty-eight".