21364302667744 has 24 divisors (see below), whose sum is σ = 42061073962320. Its totient is φ = 10682125153536.

The previous prime is 21364302667727. The next prime is 21364302667819. The reversal of 21364302667744 is 44776620346312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24426532 + ... + 25286044.

It is an arithmetic number, because the mean of its divisors is an integer number (1752544748430).

Almost surely, 2^{21364302667744} is an apocalyptic number.

It is an amenable number.

21364302667744 is a deficient number, since it is larger than the sum of its proper divisors (20696771294576).

21364302667744 is an equidigital number, since it uses as much as digits as its factorization.

21364302667744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636282 (or 1636274 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 55.

The spelling of 21364302667744 in words is "twenty-one trillion, three hundred sixty-four billion, three hundred two million, six hundred sixty-seven thousand, seven hundred forty-four".