21754360288 has 12 divisors (see below), whose sum is σ = 42828896880. Its totient is φ = 10877180128.

The previous prime is 21754360247. The next prime is 21754360321. The reversal of 21754360288 is 88206345712.

It is a super-2 number, since 2×21754360288² (a number of 21 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 339911848 + ... + 339911911.

It is an arithmetic number, because the mean of its divisors is an integer number (3569074740).

Almost surely, 2^21754360288 is an apocalyptic number.

It is an amenable number.

21754360288 is a deficient number, since it is larger than the sum of its proper divisors (21074536592).

21754360288 is an equidigital number, since it uses as much as digits as its factorization.

21754360288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679823769 (or 679823761 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 21754360288 in words is "twenty-one billion, seven hundred fifty-four million, three hundred sixty thousand, two hundred eighty-eight".