21733271328 has 48 divisors (see below), whose sum is σ = 57901344480. Its totient is φ = 7136295936.

The previous prime is 21733271293. The next prime is 21733271423. The reversal of 21733271328 is 82317233712.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 1683033 + ... + 1695896.

It is an arithmetic number, because the mean of its divisors is an integer number (1206278010).

Almost surely, 2^21733271328 is an apocalyptic number.

It is an amenable number.

21733271328 is an abundant number, since it is smaller than the sum of its proper divisors (36168073152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21733271328 is a wasteful number, since it uses less digits than its factorization.

21733271328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379009 (or 3379001 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

It can be divided in two parts, 2173327 and 1328, that added together give a triangular number (2174655 = T₂₀₈₅).

The spelling of 21733271328 in words is "twenty-one billion, seven hundred thirty-three million, two hundred seventy-one thousand, three hundred twenty-eight".