21460934128 has 20 divisors (see below), whose sum is σ = 41583686688. Its totient is φ = 10729660160.

The previous prime is 21460934101. The next prime is 21460934141. The reversal of 21460934128 is 82143906412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209625 + ... + 294727.

Almost surely, 2^21460934128 is an apocalyptic number.

It is an amenable number.

21460934128 is a deficient number, since it is larger than the sum of its proper divisors (20122752560).

21460934128 is a wasteful number, since it uses less digits than its factorization.

21460934128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100872 (or 100866 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 21460934128 in words is "twenty-one billion, four hundred sixty million, nine hundred thirty-four thousand, one hundred twenty-eight".