499680377856 has 264 divisors, whose sum is σ = 1576232970624. Its totient is φ = 151201751040.

The previous prime is 499680377813. The next prime is 499680377881. The reversal of 499680377856 is 658773086994.

499680377856 is a `hidden beast` number, since 49 + 96 + 80 + 377 + 8 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (264).

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 23 ways as a sum of consecutive naturals, for example, 79779781 + ... + 79786043.

Almost surely, 2^499680377856 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 499680377856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788116485312).

499680377856 is an abundant number, since it is smaller than the sum of its proper divisors (1076552592768).

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

499680377856 is a wasteful number, since it uses less digits than its factorization.

499680377856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087 (or 7066 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 72.

The spelling of 499680377856 in words is "four hundred ninety-nine billion, six hundred eighty million, three hundred seventy-seven thousand, eight hundred fifty-six".