499168254521664 has 672 divisors, whose sum is σ = 1838550541027200. Its totient is φ = 131635074170880.

The previous prime is 499168254521647. The next prime is 499168254521737. The reversal of 499168254521664 is 466125452861994.

499168254521664 is a `hidden beast` number, since 4 + 9 + 9 + 1 + 6 + 8 + 2 + 5 + 452 + 166 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is a junction number, because it is equal to n+sod(n) for n = 499168254521592 and 499168254521601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14794975707 + ... + 14795009445.

It is an arithmetic number, because the mean of its divisors is an integer number (2735938305100).

Almost surely, 2^{499168254521664} 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 499168254521664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919275270513600).

499168254521664 is an abundant number, since it is smaller than the sum of its proper divisors (1339382286505536).

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

499168254521664 is a wasteful number, since it uses less digits than its factorization.

499168254521664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47228 (or 47205 counting only the distinct ones).

The product of its digits is 895795200, while the sum is 72.

The spelling of 499168254521664 in words is "four hundred ninety-nine trillion, one hundred sixty-eight billion, two hundred fifty-four million, five hundred twenty-one thousand, six hundred sixty-four".