21360543364 has 12 divisors (see below), whose sum is σ = 37420430544. Its totient is φ = 10668991784.

The previous prime is 21360543353. The next prime is 21360543403. The reversal of 21360543364 is 46334506312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815714 + ... + 2823289.

It is an arithmetic number, because the mean of its divisors is an integer number (3118369212).

Almost surely, 2^21360543364 is an apocalyptic number.

It is an amenable number.

21360543364 is a deficient number, since it is larger than the sum of its proper divisors (16059887180).

21360543364 is a wasteful number, since it uses less digits than its factorization.

21360543364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639954 (or 5639952 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 21360543364 in words is "twenty-one billion, three hundred sixty million, five hundred forty-three thousand, three hundred sixty-four".