20031146466 has 8 divisors (see below), whose sum is σ = 40062292944. Its totient is φ = 6677048820.

The previous prime is 20031146459. The next prime is 20031146489. The reversal of 20031146466 is 66464113002.

It is a sphenic number, since it is the product of 3 distinct primes.

20031146466 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1669262200 + ... + 1669262211.

It is an arithmetic number, because the mean of its divisors is an integer number (5007786618).

Almost surely, 2^20031146466 is an apocalyptic number.

20031146466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20031146466 is a wasteful number, since it uses less digits than its factorization.

20031146466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338524416.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 20031146466 its reverse (66464113002), we get a palindrome (86495259468).

The spelling of 20031146466 in words is "twenty billion, thirty-one million, one hundred forty-six thousand, four hundred sixty-six".