21092266789 has 8 divisors (see below), whose sum is σ = 23099280768. Its totient is φ = 19100175360.

The previous prime is 21092266777. The next prime is 21092266829. The reversal of 21092266789 is 98766229012.

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 21092266789 - 2⁷ = 21092266661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21092266189) 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 7 ways as a sum of consecutive naturals, for example, 3727677 + ... + 3733330.

It is an arithmetic number, because the mean of its divisors is an integer number (2887410096).

Almost surely, 2^21092266789 is an apocalyptic number.

It is an amenable number.

21092266789 is a deficient number, since it is larger than the sum of its proper divisors (2007013979).

21092266789 is a wasteful number, since it uses less digits than its factorization.

21092266789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461275.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 21092266789 in words is "twenty-one billion, ninety-two million, two hundred sixty-six thousand, seven hundred eighty-nine".