21340560634364 has 12 divisors (see below), whose sum is σ = 37818715048800. Its totient is φ = 10535213477568.

The previous prime is 21340560634331. The next prime is 21340560634399. The reversal of 21340560634364 is 46343606504312.

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, 33766709549 + ... + 33766710180.

It is an arithmetic number, because the mean of its divisors is an integer number (3151559587400).

Almost surely, 2^{21340560634364} is an apocalyptic number.

It is an amenable number.

21340560634364 is a deficient number, since it is larger than the sum of its proper divisors (16478154414436).

21340560634364 is a wasteful number, since it uses less digits than its factorization.

21340560634364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67533419812 (or 67533419810 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 21340560634364 in words is "twenty-one trillion, three hundred forty billion, five hundred sixty million, six hundred thirty-four thousand, three hundred sixty-four".