21363401732 has 12 divisors (see below), whose sum is σ = 38396384460. Its totient is φ = 10393006176.

The previous prime is 21363401711. The next prime is 21363401749. The reversal of 21363401732 is 23710436312.

It can be written as a sum of positive squares in 2 ways, for example, as 16719524416 + 4643877316 = 129304^2 + 68146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72173507 + ... + 72173802.

It is an arithmetic number, because the mean of its divisors is an integer number (3199698705).

Almost surely, 2^21363401732 is an apocalyptic number.

It is an amenable number.

21363401732 is a deficient number, since it is larger than the sum of its proper divisors (17032982728).

21363401732 is a wasteful number, since it uses less digits than its factorization.

21363401732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144347350 (or 144347348 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 21363401732 in words is "twenty-one billion, three hundred sixty-three million, four hundred one thousand, seven hundred thirty-two".