21750241504 has 48 divisors (see below), whose sum is σ = 43520652000. Its totient is φ = 10698614784.

The previous prime is 21750241493. The next prime is 21750241511. The reversal of 21750241504 is 40514205712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547564 + ... + 585940.

It is an arithmetic number, because the mean of its divisors is an integer number (906680250).

Almost surely, 2^21750241504 is an apocalyptic number.

It is an amenable number.

21750241504 is an abundant number, since it is smaller than the sum of its proper divisors (21770410496).

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

21750241504 is a wasteful number, since it uses less digits than its factorization.

21750241504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38675 (or 38667 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The spelling of 21750241504 in words is "twenty-one billion, seven hundred fifty million, two hundred forty-one thousand, five hundred four".