499291087680 has 1344 divisors, whose sum is σ = 2277595127808. Its totient is φ = 97312849920.

The previous prime is 499291087667. The next prime is 499291087699. The reversal of 499291087680 is 86780192994.

499291087680 is a `hidden beast` number, since 499 + 2 + 9 + 1 + 0 + 87 + 68 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 270324517 + ... + 270326363.

It is an arithmetic number, because the mean of its divisors is an integer number (1694639232).

Almost surely, 2^499291087680 is an apocalyptic number.

499291087680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499291087680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138797563904).

499291087680 is an abundant number, since it is smaller than the sum of its proper divisors (1778304040128).

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

499291087680 is a wasteful number, since it uses less digits than its factorization.

499291087680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 499291087680 in words is "four hundred ninety-nine billion, two hundred ninety-one million, eighty-seven thousand, six hundred eighty".