21946056532 has 24 divisors (see below), whose sum is σ = 38593013760. Its totient is φ = 10919531040.

The previous prime is 21946056529. The next prime is 21946056541. The reversal of 21946056532 is 23565064912.

It is a congruent number.

It is an unprimeable number.

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, 2236557 + ... + 2246347.

It is an arithmetic number, because the mean of its divisors is an integer number (1608042240).

Almost surely, 2^21946056532 is an apocalyptic number.

It is an amenable number.

21946056532 is a deficient number, since it is larger than the sum of its proper divisors (16646957228).

21946056532 is a wasteful number, since it uses less digits than its factorization.

21946056532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471 (or 12469 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 21946056532 in words is "twenty-one billion, nine hundred forty-six million, fifty-six thousand, five hundred thirty-two".