499731064544 has 96 divisors (see below), whose sum is σ = 1045046661120. Its totient is φ = 234566212608.

The previous prime is 499731064543. The next prime is 499731064549. The reversal of 499731064544 is 445460137994.

It is a super-2 number, since 2×499731064544² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 499731064544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499731064543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72347939 + ... + 72354845.

It is an arithmetic number, because the mean of its divisors is an integer number (10885902720).

Almost surely, 2^499731064544 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 499731064544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522523330560).

499731064544 is an abundant number, since it is smaller than the sum of its proper divisors (545315596576).

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

499731064544 is a wasteful number, since it uses less digits than its factorization.

499731064544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000 (or 7992 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 499731064544 in words is "four hundred ninety-nine billion, seven hundred thirty-one million, sixty-four thousand, five hundred forty-four".