21652024966 has 32 divisors (see below), whose sum is σ = 38802758400. Its totient is φ = 8930779680.

The previous prime is 21652024963. The next prime is 21652024981. The reversal of 21652024966 is 66942025612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21652024963) 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 15 ways as a sum of consecutive naturals, for example, 624706 + ... + 658453.

It is an arithmetic number, because the mean of its divisors is an integer number (1212586200).

Almost surely, 2^21652024966 is an apocalyptic number.

21652024966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21652024966 is a deficient number, since it is larger than the sum of its proper divisors (17150733434).

21652024966 is a wasteful number, since it uses less digits than its factorization.

21652024966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283244.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 21652024966 in words is "twenty-one billion, six hundred fifty-two million, twenty-four thousand, nine hundred sixty-six".