499991983632 has 40 divisors (see below), whose sum is σ = 1435162176480. Its totient is φ = 166663994400.

The previous prime is 499991983619. The next prime is 499991983657. The reversal of 499991983632 is 236389199994.

499991983632 is a `hidden beast` number, since 4 + 9 + 99 + 91 + 98 + 363 + 2 = 666.

It is a super-2 number, since 2×499991983632² (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 nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 578693994 + ... + 578694857.

It is an arithmetic number, because the mean of its divisors is an integer number (35879054412).

Almost surely, 2^499991983632 is an apocalyptic number.

It is an amenable number.

499991983632 is an abundant number, since it is smaller than the sum of its proper divisors (935170192848).

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

499991983632 is a wasteful number, since it uses less digits than its factorization.

499991983632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157388868 (or 1157388856 counting only the distinct ones).

The product of its digits is 204073344, while the sum is 72.

The spelling of 499991983632 in words is "four hundred ninety-nine billion, nine hundred ninety-one million, nine hundred eighty-three thousand, six hundred thirty-two".