21655303711 has 8 divisors (see below), whose sum is σ = 21687286464. Its totient is φ = 21623347200.

The previous prime is 21655303693. The next prime is 21655303717. The reversal of 21655303711 is 11730355612.

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 21655303711 - 2⁵ = 21655303679 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 (21655303717) 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, 2119431 + ... + 2129623.

It is an arithmetic number, because the mean of its divisors is an integer number (2710910808).

Almost surely, 2^21655303711 is an apocalyptic number.

21655303711 is a deficient number, since it is larger than the sum of its proper divisors (31982753).

21655303711 is a wasteful number, since it uses less digits than its factorization.

21655303711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13121.

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 21655303711 in words is "twenty-one billion, six hundred fifty-five million, three hundred three thousand, seven hundred eleven".