499930381665 has 96 divisors (see below), whose sum is σ = 1018698460416. Its totient is φ = 223600366080.

The previous prime is 499930381661. The next prime is 499930381681. The reversal of 499930381665 is 566183039994.

499930381665 is a `hidden beast` number, since 499 + 9 + 3 + 0 + 3 + 81 + 6 + 65 = 666.

It is not a de Polignac number, because 499930381665 - 2² = 499930381661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (499930381661) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 10252372 + ... + 10301018.

It is an arithmetic number, because the mean of its divisors is an integer number (10611442296).

Almost surely, 2^499930381665 is an apocalyptic number.

499930381665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

499930381665 is an abundant number, since it is smaller than the sum of its proper divisors (518768078751).

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

499930381665 is a wasteful number, since it uses less digits than its factorization.

499930381665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50279 (or 50276 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 63.

The spelling of 499930381665 in words is "four hundred ninety-nine billion, nine hundred thirty million, three hundred eighty-one thousand, six hundred sixty-five".