21885287683 has 8 divisors (see below), whose sum is σ = 25151489280. Its totient is φ = 18654019080.

The previous prime is 21885287647. The next prime is 21885287771. The reversal of 21885287683 is 38678258812.

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 21885287683 - 2¹³ = 21885279491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21885287483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8731903 + ... + 8734408.

It is an arithmetic number, because the mean of its divisors is an integer number (3143936160).

Almost surely, 2^21885287683 is an apocalyptic number.

21885287683 is a deficient number, since it is larger than the sum of its proper divisors (3266201597).

21885287683 is a wasteful number, since it uses less digits than its factorization.

21885287683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17466497.

The product of its digits is 10321920, while the sum is 58.

The spelling of 21885287683 in words is "twenty-one billion, eight hundred eighty-five million, two hundred eighty-seven thousand, six hundred eighty-three".