21023411466 has 16 divisors (see below), whose sum is σ = 42087538944. Its totient is φ = 7001017824.

The previous prime is 21023411419. The next prime is 21023411503. The reversal of 21023411466 is 66411432012.

It is a super-3 number, since 3×21023411466³ (a number of 32 digits) contains 333 as substring.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 1689786 + ... + 1702181.

It is an arithmetic number, because the mean of its divisors is an integer number (2630471184).

Almost surely, 2^21023411466 is an apocalyptic number.

21023411466 is an abundant number, since it is smaller than the sum of its proper divisors (21064127478).

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

21023411466 is a wasteful number, since it uses less digits than its factorization.

21023411466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393005.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 21023411466 its reverse (66411432012), we get a palindrome (87434843478).

The spelling of 21023411466 in words is "twenty-one billion, twenty-three million, four hundred eleven thousand, four hundred sixty-six".