468004916821 has 4 divisors (see below), whose sum is σ = 504005295052. Its totient is φ = 432004538592.

The previous prime is 468004916807. The next prime is 468004916843. The reversal of 468004916821 is 128619400864.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36731639025 + 431273277796 = 191655^2 + 656714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-468004916821 is a prime.

It is a super-2 number, since 2×468004916821² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (468004916221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18000189096 + ... + 18000189121.

It is an arithmetic number, because the mean of its divisors is an integer number (126001323763).

Almost surely, 2^468004916821 is an apocalyptic number.

It is an amenable number.

468004916821 is a deficient number, since it is larger than the sum of its proper divisors (36000378231).

468004916821 is a wasteful number, since it uses less digits than its factorization.

468004916821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36000378230.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 468004916821 in words is "four hundred sixty-eight billion, four million, nine hundred sixteen thousand, eight hundred twenty-one".