21303641372 has 24 divisors (see below), whose sum is σ = 40275854976. Its totient is φ = 9801425088.

The previous prime is 21303641357. The next prime is 21303641383. The reversal of 21303641372 is 27314630312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629708 + ... + 662675.

It is an arithmetic number, because the mean of its divisors is an integer number (1678160624).

Almost surely, 2^21303641372 is an apocalyptic number.

It is an amenable number.

21303641372 is a deficient number, since it is larger than the sum of its proper divisors (18972213604).

21303641372 is a wasteful number, since it uses less digits than its factorization.

21303641372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292717 (or 1292715 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 21303641372 in words is "twenty-one billion, three hundred three million, six hundred forty-one thousand, three hundred seventy-two".