21366580883 has 16 divisors (see below), whose sum is σ = 23243332320. Its totient is φ = 19559102976.

The previous prime is 21366580817. The next prime is 21366580903. The reversal of 21366580883 is 38808566312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21366580883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21066580883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2595548 + ... + 2603766.

It is an arithmetic number, because the mean of its divisors is an integer number (1452708270).

Almost surely, 2^21366580883 is an apocalyptic number.

21366580883 is a deficient number, since it is larger than the sum of its proper divisors (1876751437).

21366580883 is a wasteful number, since it uses less digits than its factorization.

21366580883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12406.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 21366580883 in words is "twenty-one billion, three hundred sixty-six million, five hundred eighty thousand, eight hundred eighty-three".