499978654704 has 140 divisors (see below), whose sum is σ = 1452856688056. Its totient is φ = 166606989696.

The previous prime is 499978654633. The next prime is 499978654739. The reversal of 499978654704 is 407456879994.

499978654704 is a `hidden beast` number, since 4 + 9 + 9 + 9 + 78 + 6 + 547 + 0 + 4 = 666.

It is a super-2 number, since 2×499978654704² (a number of 24 digits) contains 22 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 (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 59213907 + ... + 59222349.

Almost surely, 2^499978654704 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 499978654704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726428344028).

499978654704 is an abundant number, since it is smaller than the sum of its proper divisors (952878033352).

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

499978654704 is an equidigital number, since it uses as much as digits as its factorization.

499978654704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13546 (or 13525 counting only the distinct ones).

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

The spelling of 499978654704 in words is "four hundred ninety-nine billion, nine hundred seventy-eight million, six hundred fifty-four thousand, seven hundred four".