21982608935 has 16 divisors (see below), whose sum is σ = 30189542400. Its totient is φ = 15052806816.

The previous prime is 21982608919. The next prime is 21982608937. The reversal of 21982608935 is 53980628912.

It is a cyclic number.

It is not a de Polignac number, because 21982608935 - 2⁴ = 21982608919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21982608937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411605 + ... + 461934.

It is an arithmetic number, because the mean of its divisors is an integer number (1886846400).

Almost surely, 2^21982608935 is an apocalyptic number.

21982608935 is a deficient number, since it is larger than the sum of its proper divisors (8206933465).

21982608935 is an equidigital number, since it uses as much as digits as its factorization.

21982608935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874270.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 21982608935 in words is "twenty-one billion, nine hundred eighty-two million, six hundred eight thousand, nine hundred thirty-five".