21132583609 has 8 divisors (see below), whose sum is σ = 22166848512. Its totient is φ = 20107940160.

The previous prime is 21132583583. The next prime is 21132583613. The reversal of 21132583609 is 90638523112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21132583609 - 2⁷ = 21132583481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132583709) by changing a digit.

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, 2400864 + ... + 2409649.

It is an arithmetic number, because the mean of its divisors is an integer number (2770856064).

Almost surely, 2^21132583609 is an apocalyptic number.

It is an amenable number.

21132583609 is a deficient number, since it is larger than the sum of its proper divisors (1034264903).

21132583609 is a wasteful number, since it uses less digits than its factorization.

21132583609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810727.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 21132583609 in words is "twenty-one billion, one hundred thirty-two million, five hundred eighty-three thousand, six hundred nine".