21340006264 has 16 divisors (see below), whose sum is σ = 40014487800. Its totient is φ = 10669476192.

The previous prime is 21340006229. The next prime is 21340006273. The reversal of 21340006264 is 46260004312.

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, 146539 + ... + 253285.

Almost surely, 2^21340006264 is an apocalyptic number.

It is an amenable number.

21340006264 is a deficient number, since it is larger than the sum of its proper divisors (18674481536).

21340006264 is a wasteful number, since it uses less digits than its factorization.

21340006264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131742 (or 131738 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 21340006264 in words is "twenty-one billion, three hundred forty million, six thousand, two hundred sixty-four".